Denver, CO
Man found guilty of murder 9 years after girlfriend’s body was found in Denver-bound Amtrak train
DENVER — A Denver man was convicted Friday of murdering his girlfriend, nearly 10 years after her body was discovered inside a Denver-bound Amtrak train.
Angelo Valentino Mantych, 43, was convicted by a jury of his peers on one count of first-degree murder after deliberation for killing 28-year-old Marina Placensia while on-board an Amtrak overnight train that was headed to Denver from Wisconsin the morning of Sept. 1, 2016.
It took jurors about five hours of deliberation to reach the guilty verdict on Friday. Each was individually polled on their decision — and all of them confirmed their verdict.
Mantych, who was in court Friday for the reading of the verdict, hanged his head as it was read. He was scheduled to be sentenced on Jan. 9.
Meanwhile, Placensia’s family was overcome with emotion when they heard the guilty verdict. Outside of the courtroom, Placensia’s father told Denver7 the day felt like Christmas, New Years Eve, and his birthday rolled into one day.
Denver7 also spoke with a juror, who said the group was united in their decision and worked well together.
First-degree murder carries a mandatory sentence of life in prison without the possibility of parole, but the sentencing hearing will be an opportunity for those who loved Placensia to tell the judge how this loss has impacted their lives.
The two sides delivered their closing arguments on Friday morning.
Prosecutors said Placensia took the train that day with her four children, three of whom she shared with Mantych, to escape years of abuse and domestic violence. They argued that a “loss of control” served as motive for the killing. Prosecutors aimed to discredit the alternative explanations offered for Placensia’s death, pointing to what they said was clear evidence of a smothering.
Man found guilty of murder 9 years after girlfriend’s body was found in Denver-bound Amtrak train
The defense’s closing arguments centered around an apparent lack of commotion on the train on the night of Placensia’s death, saying it would be “almost impossible” for her to have been smothered for several minutes without their children noticing. Defense attorneys also called into question the integrity of an investigation that saw significant delays.
The case against Mantych is one Denver7 has been following since at least October 2023, when Mantych was charged with murder in connection with the crime.
An arrest affidavit obtained by Denver7 in the case showed the woman had several bruises on her body “consistent with an assault or struggle,” but investigators were not able to identify an obvious cause of death at the time. An autopsy later found blunt impacts to her head, trunk and extremities.
The investigation took several years to piece together, something the defense brought into question during closing arguments Friday.
“I think this case is such a great example of law enforcement just remaining committed to a case that they knew something happened, but we just had challenges with filing it, and so it’s a real testament to endurance and commitment by the entire team who’s worked on it since 2016,” said Assistant District Attorney Lara Mullin outside of the courtroom.
“It sends a very strong message to offenders who think that they can continue to perpetrate these types of crimes and violence on victims of domestic violence, that there will be justice sought and that we will not relent in our pursuit of that justice for victims of domestic violence,” said Amelia Sapp, the Chief Trial Deputy of Domestic Violence and Child Victims.
During the investigative process, one person told detectives that Mantych beat Placensia daily, and another said she had to go to a hospital multiple times for her injuries from the assaults, according to arresting documents. At least one of the reports obtained from the Racine Police Department and dated March 13, 2015, showed Mantych had punched Placensia’s ear several times, causing her to lose hearing in that ear. He was arrested and charged with assault after that incident.
On May 18, 2023, a doctor confirmed he believed Placensia’s cause of death was the result of asphyxia from suffocation and said her injuries were consistent with suffocation cases in both living and deceased patients, the affidavit stated. He said he believed her injuries were the result of an assault, including blunt force trauma and suffocation.
Mantych pleaded not guilty to the first-degree murder charge on June 21, 2024, according to court documents.
His trial began at the beginning of the month.
He did not testify in the trial and his defense team declined to comment on the verdict.
Editor’s note: If you or someone you know is experiencing domestic violence, help is available through Violence Free Colorado or the National Domestic Violence Hotline at 800-799-7233.
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Denver, CO
Broncos Ring of Famer Craig Morton, who led Denver to first Super Bowl, dies at 83
Craig Morton, a Broncos Ring of Fame quarterback who played professionally for nearly two decades, died Saturday at his home in Mill Valley, Calif., at the age of 83.
Morton’s family confirmed his death through the organization, which announced the news on Monday.
Morton led Denver to its first Super Bowl appearance in 1977, quarterbacking the team best known for its ferocious Orange Crush defense. That season, at the age of 34, Morton earned the league’s comeback player of the year award and sparked a six-season run with the Broncos.
“He was our leader that year that we went 12-2, the first year he came to Denver,” fellow Broncos Ring of Famer and former safety Steve Foley told The Post. “It was a magical season. He was just tough as nails.”
Morton was hurt throughout the playoffs and Foley said the quarterback was in the hospital before the AFC Championship Game, when the Broncos beat the Oakland Raiders, 20-17, and advanced to their first Super Bowl appearance.
“I don’t know how he even suited up,” Foley said. “He was black and blue and yellow all over his hip. … Man, he came out and had a great game. He was just tough.
“And what a gem of a guy. Oh, yeah. He had the best heart.”
Morton was the first quarterback to lead two different teams to the Super Bowl, taking the Cowboys there in 1970 before later leading the Broncos.
Morton was born in February 1943 in Michigan, but graduated from high school in California and played quarterback in college at Cal. He also played baseball in college. He was selected No. 5 overall by Dallas in the 1965 NFL Draft, five years before the AFL and NFL merged.
Early in his career, Morton started for Dallas over Roger Staubach before Staubach eventually took over the job.
Morton, though, engineered a long and successful career in pro football.
He played in 207 career games over 18 seasons, including 72 games (64 starts) for the Broncos from 1977-82. Morton was 41-23 as a starter and threw for 11,895 yards for Denver.
“He had a confidence about himself. Kind of a swagger,” Foley said. “Our offense picked up when he arrived. We just knew he could win. He brought that to the team. And man, he had an arm. Oh, yeah. He had a gun.”
Morton was inducted into the Broncos Ring of Fame in 1988 as part of a three-man class along with Haven Moses and Jim Turner. Four years later, he was enshrined in the College Football Hall of Fame.
Morton’s tenure in Denver helped put the Broncos on the map.
“Absolutely, it did,” Foley said. “It made everybody wake up and say, ‘Who is this team on the interior of the United States?’ Unless you played on the East Coast or West Coast, you weren’t getting much coverage.”
Foley said he last saw Morton in the Champions Club at Empower Field during a game sometime in the past two seasons and said he remembered thinking, ‘Man, he looks great.’” Players from the Orange Crush era were surprised and saddened, then, to learn of the quarterback’s passing.
“It’s a little bit shocking,” Foley said. “He was a beautiful guy.”
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Denver, CO
The hippo had to go, but the Denver Zoo slashed its water budget
Rocky Mountain sandhill cranes battle warmer conditions due to drought
Wildlife biologist Jenny Nehring and farmer Rob Jones talk about Sandhill cranes and their impact on the San Luis Valley.
DENVER — Zoos are of necessity big gulpers of water, a fact that has some zookeepers in the drying American West working to rapidly upgrade efficiency and reduce unnecessary irrigation or leaks.
Denver Zoo, formally known as the Denver Zoo Conservation Alliance, has rapidly reduced its demands on threatened and declining water sources, including the Colorado River.
Among the upgrades is a sea lion water filtration system that allows most of the water to be cleaned and reused each time the pool is drained. That’s saving more than 8 million gallons a year, zoo sustainability director Blair Neelands said. “You can get in there, scrub it with a toothbrush and refill it with the same water,” she said.
Similar upgrades to an African penguin showcase reduced its water use by 95% by largely eliminating what’s sent down the drain. (Like a backyard swimming pool, though, these tanks sometimes still need to be drained and refreshed with new water to reduce mineral buildup.)
“The biggest thing for us is swapping from dump-and-fill pools to life-support systems,” Neeland said.
Another biggie is replacement of a 50-year-old water main with funding of about $3 million from the city. There’s no way of knowing how much that pipe had leaked over the years, but Neeland suspected it was more than a million gallons a year. The savings should become apparent as the zoo tracks its water use over the next few years.
Creating hippo-sized water savings
When The Arizona Republic visited in 2025, the zoo was on the cusp of eclipsing a goal to reduce its water use by half of what it had been in 2018. The zoo had used 80 million gallons in 2024, or about 219,000 a day, a 45% reduction in just a handful of years. Much of the savings had come in the form of smarter irrigation practices and use of drought-tolerant native plants where possible. The landscaping also pivoted to recycled “purple pipe” water from the city, which owns the zoo’s land, restricting potable water to areas where animals really need it.
“When people hear ‘recycled water,’ they get worried about cleanliness and hygiene,” zoo spokesman Jake Kubié said. “But it’s safe for the animals, and it’s not their drinking water.”
Getting past the water conservation goal would mean draining the pool where Mahali the hippo spent most hours lurking with just his eyes, ears and snout visible to visitors. Because he spent so much time in the pool, the water needed daily changes. It amounted to 21 million gallons a year, not to mention water heater bills that drove the cost to $200,000 a year, according to zoo officials. They estimated that Mahali used as much water as 350,000 four-person households.
“This facility is outdated,” Kubié said. “Some day this will become a huge saver of water.”
That day came before year’s end, and it indeed brought a tremendous savings. The zoo shipped Mahali to a new home (and a potential mate) at a wildlife preserve in Texas and drained the pool one last time. Ending the daily change-outs shaved more than a quarter of the zoo’s entire water usage from the previous year. It put the zoo significantly beyond its goal.
Denver Zoo’s water savings are part of a broader waste- and pollution-prevention effort aimed at being a good neighbor in uncertain times, Neeland said.
“Water savings and drought is top of mind for anyone who lives in the Western United States,” she said.
In Phoenix, a different mix of animals
That’s true of the Phoenix Zoo, as well, where zookeepers must maintain landscaping and animal exhibits in a city that baked under 100-degree-plus high temperatures for a third of the days last year. The zoo creates a “respite in the desert,” spokeswoman Linda Hardwick said, but has no hippos, penguins, grizzly bears or many of the other species that would require big water investments for outdoor swimming or cooling.
“We really specialize in animals that will thrive in the temperatures here,” Hardwick said.
The Phoenix Zoo uses most of its water on landscaping. After a consultant’s 2023 irrigation assessment, the staff centralized irrigation scheduling under a single trained technician and employed technologies including weather-based controllers and smart meters. Salt River Project awarded $70,000 in grant funds for the upgrades and several thousand more for training.
The zoo uses about 189,000 gallons a day, she said. That represents a 17% reduction from 2023, or 20% when adjusted for the year’s particular weather and evapotranspiration demand.
Brandon Loomis covers environmental and climate issues for The Arizona Republic and azcentral.com. Reach him at brandon.loomis@arizonarepublic.com.
Environmental coverage on azcentral.com and in The Arizona Republic is supported by a grant from the Nina Mason Pulliam Charitable Trust.
Follow The Republic environmental reporting team at environment.azcentral.com and @azcenvironment on Facebook and Instagram.
Denver, CO
New video shows trespasser on Denver airport runway before deadly collision
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