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WWII-era munitions found at dumping site off SoCal coast in deep-sea survey

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WWII-era munitions found at dumping site off SoCal coast in deep-sea survey

An unprecedented expedition to map parts of Southern California’s deep-sea has uncovered World War II military weaponry littering the seafloor in massive dumping sites off the coast of Los Angeles.

The research effort spearheaded by UC San Diego’s Scripps Institution of Oceanography sheds new light on exactly what objects lay beneath the surface after thousands of “barrel-like” objects likely containing toxic chemicals were discovered by sonar in stretches of the seafloor in 2021.

Made public on Friday, the latest survey using sonar and robotic vehicles found a multitude of discarded munitions boxes and other explosives along debris lines between Los Angeles and Catalina, thousands of feet below the surface where they were previously identified.

Among the items discovered were depth charges typically used to attack submarines, Hedgehog and Mark 9 depth charges, and Mark 1 smoke floats, which are chemical smoke munitions that were often used by warships to conceal their movements.

Categories of items identified by Scripps researchers in a massive deep-sea survey made public on Friday. (Credit: UC San Diego Scripps Institute of Oceanography)

Researchers say that these were likely discarded by Navy warships headed back to port — a practice that military officials confirmed was common in years past.

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In a statement to the Scripps team, U.S. Navy officials said that “disposal of munitions at sea at this location was approved at that time to ensure safe disposal when naval vessels returned to U.S. port.” They added that officials are reviewing the findings to determine “the best path forward to ensure that the risk to human health and the environment is managed appropriately.”

These findings, scientists explained, are an important milestone in the exhaustive efforts to better understand the impacts of industrial dumping into the waters off the Southern California coast between the 1930s and 1970s, leading to a presence of the pesticide DDT that has plagued marine life in the area.

“This is a really interesting piece of work, because what it demonstrated or what it validated is that in fact there aren’t a huge, vast quantity of barrels down there — at least not what we were thinking,” Brice Simmons, a marine biologist with Scripps, said during a press briefing Friday. “It turns out that a lot of the dumping was simply bulk material dumped off to the side.”

Area coverage map of the 350 square kilometer (135 square miles) sonar survey of the two dump sites in the San Pedro Basin by the Autonomous Underwater Vehicle (AUV). This figure shows the footprint of the 2021 and 2023 surveys, with the red lines indicating video image collection. (Credit: Scripps Institution of Oceanography/ UC San Diego)
Area coverage map of the 350 square kilometer (135 square miles) sonar survey of the two dump sites in the San Pedro Basin by the Autonomous Underwater Vehicle (AUV). This figure shows the footprint of the 2021 and 2023 surveys, with the red lines indicating video image collection. (Credit: Scripps Institution of Oceanography/ UC San Diego)

As the researchers explained, the barrel-like objects found in two of the dumpsites identified in earlier surveys using primarily sonar technology had near identical dimensions to the WWII munitions. Even more advanced sonar technology and use of a high-definition deep-sea camera helped researchers distinguish between the two.

However, researchers say it will still take time to understand how massive amounts of DDT ended up in these areas, as well as how far it may be spreading through the food chain from the seafloor.

“There clearly is DDT present. One of the challenges working in the deep sea is being able to survey large areas at high resolution,” said Eric Terrill, the director of Scripps’ Marine Physical Laboratory. Terrill co-led the latest deep-ocean survey with researcher Sophia Merrifield.

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“There is a lot of cloudiness around how the DDT actually arrived at the dump site: was it in the form of containerized waste or was it bulk dumping?” he continued. “What this does right now is set the stage for understanding an improved strategy about how to sample and understand the impacts to the environment.”

Preliminary analyses suggest that it may have been through less visible pollution like the bulk dumping of DDT directly into the environment rather than through the discarding of containers.

“Our analysis of sediments are showing that bulk dumping of DDT acid waste was the norm, that DDT immediately entered the environment and was likely not in barrels,” said David Valentine, a researcher with the UC Santa Barbara team who first came across dozens of barrels — the contents of which remain a mystery.

“Once dumped, DDT spread at the seafloor, expanding its footprint to at least the base of the Catalina slope,” he continued. “We are finding that original DDT remains abundant in the seafloor today, in both absolute and relative terms.” 

According to Scripps, there remains a plethora of information that its research team has yet to piece together — findings that can help inform additional studies of DDT and seafloor exploration at large.

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“Our survey provides an opportunity to develop and apply analytical techniques to acoustic and optical imagery over wide-areas,” said Merrifield, an observational physical oceanographer who specializes in ocean robotics. “We anticipate these datasets will inform additional studies addressing impacts of dumping activities on the marine food web.” 

Los Angeles, Ca

Remains of murder victim identified as missing Southern California millionaire 

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Remains of murder victim identified as missing Southern California millionaire 

After more than four decades, the remains of a woman who was found buried in the mountains of Riverside County were identified as a multi-millionaire who went missing in 1981.

The body of Thelma Gaston was discovered by a person gathering firewood in a mountainous area near Sugar Loaf Mountain and the Pinyon Crest community on Nov. 28, 1981.

After experiencing a series of heartbreaking life events, including the death of her husband and her 32-year-old son in the same year in 1957, Gaston continued forging ahead, focusing on her business of buying repossessed properties and selling them. 

By 1980, she had amassed a fortune estimated to be over $20 million, SFGATE reported.

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On June 28, 1981, a note was left on the front door of her home near Century City, saying she was out searching for her cat. However, she never returned home and her loved ones did not hear from her.

By then, Gaston was 80 years old. As Los Angeles Police Department detectives investigated her disappearance, they discovered a younger man, Lawrence Remsen, then 39, had recently entered her life and was the woman’s romantic companion, SFGATE reported.

At one point, the woman’s friends said Gaston had wondered about Remsen’s motives in being with her.

Police eventually found letters and documents reportedly signed by Gaston that gave Remsen power of attorney. Another letter allegedly written by the woman claimed she had run away “to have some fun in life.” However, her friends said the move was completely out of character.

Detectives later confirmed the letters were certified with a stolen notary stamp and her signatures were believed to be forged. 

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Remsen had tried selling some of Gaston’s properties and attempted to withdraw more than $100,000 from her bank accounts. Remsen eventually fled the Southern California area.

A few months later, he was arrested by border agents when he tried to enter the U.S. from Mexico. He was charged with Gaston’s murder even though the woman’s body had not been found.

During a trial hearing, Remsen later claimed he found the woman dead of natural causes in her home and, attempting to take her fortune, had disposed of her body in the ocean.

The judge disagreed and later ruled that Remsen had killed the woman “intentionally and with malice.” He was convicted of murder and sentenced to life in prison.

Gaston’s body was later discovered buried in a shallow grave in the mountains. However, due to the poor condition of the remains, investigators were unable to narrow down an identity.

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A breakthrough occurred in 2022 when the Riverside County Sheriff’s Coroner’s Bureau received new funding to reexamine long-standing unidentified cases. 

“Combined with significant advances in forensic science, this funding opened new avenues for identification,” the sheriff’s office said.

In May 2026, utilizing investigative genetic genealogy and dental records, the remains were positively identified as Gaston’s.

“The Riverside Sheriff’s Coroner’s Bureau extends its sincere appreciation to everyone whose dedication, expertise, and perseverance made this identification possible,” officials said in a statement. “Together, these efforts have ensured that Ms. Gaston has her name—and her story—returned to her.”

Remsen, who is now 83 years old, continues serving his life sentence at the California Institution for Men in Chino.

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Southern California hits hottest day of its extreme heat warning

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Southern California hits hottest day of its extreme heat warning

Southern California remains under an extreme heat warning as residents brace for the hottest day of the week on Wednesday.

“It will be roasty toasty in the valleys, lower mountain elevations and far interior, with highs ranging from 100 to 110 degrees,” the National Weather Service said. The warmest conditions are expected in the western San Fernando Valley.

An extreme heat warning remains in effect for much of Southern California until 8 p.m. Thursday. Forecasters say there is a high risk of heat-related illness for anyone outdoors for extended periods. Heat advisories are also in place for areas along the coast.

“Highs for today: 98 in Ojai, 100 in Ontario. Temecula, good morning to you, 100 degrees expected there. 112 in Palm Springs. Unbelievably hot,” KTLA’s Kirk Hawkins said Wednesday morning.

Southern California will be under an extreme heat warning from July 14-16, 2026. (National Weather Service)

Residents are urged to adjust their afternoon plans to limit strenuous outdoor activities during the heat of the day, stay hydrated and check in on elderly neighbors and loved ones.

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The Weather Service said record highs are slightly warmer than those forecast for Wednesday. As a result, despite the extremely hot conditions, few, if any, temperature records are expected to be broken.

A few degrees of cooling are expected Thursday, but a more significant cooldown will arrive Friday as onshore winds increase.

Afternoon highs are expected to cool even more over the weekend, with below-average temperatures possible in some areas.

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Stabbing at Chino Hills liquor store ends in attempted murder arrest

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Stabbing at Chino Hills liquor store ends in attempted murder arrest

A Chino Hills man was arrested on suspicion of attempted murder following a violent incident at a local liquor store, authorities announced Tuesday.

The July 13 incident occurred around 5 p.m. in the 4000 block of Descanso Avenue, according to the San Bernardino Sheriff’s Department, which responded to reports of a stabbing at the location.

Arriving deputies found a stabbing victim inside the store and rendered medical aid until personnel with the Chino Valley Fire District arrived. The victim was transported to Pomona Valley Hospital Medical Center, where he remains in stable condition.

While being treated at the scene, investigators said the victim repeatedly stated that someone named Alex was responsible for the attack.

A 30-year-old man was arrested after stabbing inside a liquor store in the 4000 block of Descanso Avenue on July 13, 2026. (Google)

The suspect, now identified as Hayden Alexander Marquez, 30, was located not far from the liquor store and taken into custody, sheriff’s officials said.

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Investigators did not provide a motive for the stabbing or detail the relationship between the two men.

Marquez was booked into the West Valley Detention Center on suspicion of attempted murder.

Anyone with information about the investigation is urged to contact the Chino Hills Police Station at 909-364-2000. Those wishing to remain anonymous can call the We-Tip hotline at 800-78-CRIME or submit tips online at www.wetip.com.

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