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
Denver bans federal law enforcement officers from covering their faces, DHS says it won’t comply
Denver city leaders unanimously passed a ban on all officers, including Immigration and Customs Enforcement agents, from wearing face coverings while detaining or arresting people. That law also requires officers to wear visible identification.
It’s the second sweeping ordinance against federal officers in Denver in just a few days. Last Thursday, Mayor Mike Johnston signed an executive order banning federal immigration agents from operating on city property without a judicial warrant.
It also directs Denver police, deputies and fire personnel to investigate reports of violence and criminal behavior.
The Department of Homeland Security responded calling the executive order “legally illiterate,” adding, “no local official has the authority to bar ICE from carrying out federal law on public property … and while Mayor Johnston continues to release pedophiles, rapists, gang members, and murderers onto their streets, our brave law enforcement will continue to risk their lives to arrest these heinous criminals.”
DHS didn’t mince words when responding to Denver’s new face coverings ban either, saying in part, “To be crystal clear: we will not abide by a city council’s unconstitutional ban. Our officers wear masks to protect themselves from being doxxed and targeted by known and suspected terrorist sympathizers. Not only is ICE law enforcement facing a more than 1,300 percent increase in assaults against them, but we’ve also seen thugs launch websites to reveal officers’ identity.”
On the other hand, the Denver City Council didn’t mince words when it approved the ban.
“It’s very disturbing to me, as an American, to see masked agents on the street,” said Councilman Kevin Flynn who represents District 2. “I don’t know what the best way is to enforce our immigration laws, but I think I know the worst way when I see it.”
“I said all along, this was a slam dunk,” added Councilman Darrell Watson of District 9.
Last month, a federal judge struck down a California law prohibiting federal agents from wearing masks. But, the city council says it made sure its ordinance is enforceable.
You have to treat all law enforcement the same,” said City Council President Amanda Sandoval. “So, our sheriffs can’t have masks. Our State Patrol can’t have masks. And federally you can’t have masks. And we delineate that within the ordinance which, that’s where California got the issue.”
Sandoval said she was monitoring the legal process and comparing the two ordinances to ensure they would be good to go.
Although the city council believes the ordinance is constitutional, the Denver Police Department says it’s still working to determine what implementation could look like, and provided this statement to CBS Colorado:
“Our Safety departments are working with the City Attorney and bill sponsors to determine what implementation could look like. Of utmost importance is discretion and prioritizing de-escalation when encountering these situations. Our goal is to apply this ordinance in a way that builds trust and transparency without putting officers, deputies, or the public at risk.”
Coupled with the city’s new executive order, Sandoval believes Denver now has the necessary guidelines in place.
“A map for residents to understand predictability, and that’s what I always want, is what can the residents be able to rely on.”
There are exemptions in place for the ban, for example: during an active undercover operation, when gear is required for physical safety, and for personnel performing SWAT duties.
Denver, CO
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Denver, CO
Denver rally shows divided feelings over U.S.-Israel action against Iran
DENVER — More than 24 hours after the United States and Israel attacked Iran, Coloradans are continuing to express their feelings about what the attack means not only for the world, but here in our state.
For the second straight day, Coloradans expressed their opinions on the steps of the state Capitol about the attack by the US and Israel on Iran.
But instead of anger, as was the case on Saturday, the tone on Sunday was more cheerful.
“Today it’s a celebration about like getting our freedom back, and we would love to have people to be happy with us,” said Forzun Yalme, who helped organize the event with Free Iran Colorado.
For some Iranian-Americans, the news of the attack brings a new sense of hope that freedom is near.
“For me to be Iranian-American, in 47 years here, I learned about democracy and human rights and what I like,” detailed Amir Tosh, another member of Free Iran Colorado. “I want to transfer what your values are for democracy, human rights, freedom to my country, my motherland.”
Denver rally shows divided feelings over U.S.-Israel action against Iran
“My uncle and grandma, grandparents, they were all so happy about what happened, because we can, like, now feel the freedom,” explained Yalme.
But some Iranian-Americans are more cautious.
Colorado’s only Iranian-American state representative, Yara Zokaie, doubts the operation will have a significant impact to Iran’s leadership.
“I’m sympathetic to people who want regime change by any means necessary, but I think we also need to stop and realize what this actually means,” said Zokaie. “Regime change is not something that can happen in one airstrike.”
Zokaie admits she herself was elated to hear Iran’s supreme leader and other top officials were killed in the attack.
But she hopes Coloradans remember the innocent people who have already been killed and those who are more likely to come.
“I ask that we remember the humanity of people in the Middle East as this news unfolds. I ask that we call for a peaceful resolution that we empower Iranian people who will bring change from within, and that we call for no war with Iran,” said Zokaie.
Several people at today’s event at the Capitol approached our Denver7 team. They shared their gratitude for President Donald Trump, the US military, and the Israelis for their action in helping bring freedom to Iran.
They hope others will see that as well. They plan on being here for the next hour and a half or so.
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