Video of a vehicle driving near where a missing 20-year-old Iowa woman had been out running helped police quickly identify the driver as the suspect in her 2018 disappearance, an investigator told jurors Thursday.
Poweshiek County Deputy Steve Kivi said the homeowner’s surveillance video collected during a canvass showed a black Chevy Malibu with chrome door handles “just kind of lingering” near where Mollie Tibbetts disappeared while running on July 18, 2018, in Brooklyn, Iowa.
Kivi said he reviewed the video on Aug. 15, 2018, while investigating what happened to Tibbetts, a University of Iowa student who was back in her hometown over summer break. The next day, Kivi said he spotted the vehicle just outside of Brooklyn getting off of Interstate 80 and later interviewed the driver, a local dairy farm worker named Cristhian Bahena Rivera.
Kivi testified on the second day of Bahena Rivera’s trial for first-degree murder in the death of Tibbetts. Prosecutors say the video of Bahena Rivera’s vehicle, blood found in its trunk that was later a match for Tibbetts and a partial confession by the defendant will be key to proving his guilt.
Bahena Rivera’s defense team tried Thursday to cast doubt on others who had initially come under scrutiny, including Tibbetts’ boyfriend and local residents who had been investigated because of their past behavior toward women.
Kivi said that Bahena Rivera was cooperative during their initial discussion on Aug. 16, 2018, and calmly denied knowing anything about what happened to Tibbetts. But the deputy recounted driving with Bahena Rivera and other law enforcement officials just four days later to the cornfield where Tibbetts’ remains were discovered.
Police say that Bahena Rivera led them to the body after a lengthy interrogation, although a judge ruled that those statements cannot be used at the trial because an officer had failed to read him his Miranda rights.
Bahena Rivera made additional incriminating statements at the scene that can be used, including that he had approached Tibbetts while she ran, fought with her after she threatened to call police, and remembered driving to the field where he left her bloody body.
Kivi acknowledged that investigators never found a murder weapon. An autopsy found that Tibbetts had died of stab wounds.
He acknowledged that several other county residents had come under scrutiny during the monthlong investigation, including a man who lived next to where Tibbetts’ body was found. But he said no evidence was found linking anyone else to Tibbetts’ death.
GARDEN GROVE, Calif. (AP) — A crack that formed by chance in an overheated chemical tank in Southern California relieved pressure and helped avert a catastrophic explosion, but officials said Tuesday it still wasn't safe enough for 16,000 people living closest to the aerospace plant to return home.
The crisis forced 50,000 people to evacuate in and around the Orange County city of Garden Grove last week. Most returned home after the crack formed over the Memorial Day weekend, but the risk of a smaller explosion or potential spill kept evacuation orders in place for about a third of residents.
Isabel Mendez was among those still waiting to return to her mobile home. She said she broke out in a rash on her face and developed tingling lips and a sore throat while evacuating last week. After spending several expensive nights in a hotel, she is now staying with her mother north of Los Angeles.
She remains uncertain about returning home because she does not trust official assurances that the area is safe.
“Of course it is still dangerous,” she said.
Exposure to methyl methacrylate — a highly flammable chemical used to make plastics — can cause serious respiratory problems, neurological problems and irritation to the skin, eyes and throat, according to the federal Environmental Protection Agency. The tank at GKN Aerospace Transparency Systems contains 6,000 to 7,000 gallons (22,700 to 26,500 liters) of the chemical.
Underscoring the dangers of living near hazardous material was an implosion of a chemical tank at a pulp and paper mill in Washington state on Tuesday that injured at least 10 people, while an undisclosed number of others had been killed or remained missing.
Crews at the California plant worked overnight to ensure two nearby tanks were neutralized and would not be affected by the compromised tank, Orange County Fire Capt. Brian Yau said, adding that material from one of these two tanks was transferred to another that has a neutralizing agent.
The tank overheated because a valve on the cooling system failed, fire officials said.
“That’s what kept it at 50 degrees,” or 10 degrees Celsius, said TJ McGovern, interim chief of the Orange County Fire Authority.
“Due to that failure, the tank went into the heating-up process because it wasn’t continuing to be chilled,” he said at a press conference Monday evening.
Crews sprayed water on the tank until the interior temperature stabilized to 92 F (33.3 C), down from 100 F (37.7 C) over the weekend, the fire department said Tuesday. The hoses put out 1,250 gallons a minute over five days, which meant they used about 9 million gallons of water.
The sprinkler system at the facility continues to douse the tank, and the company said its technical specialists and firefighters removed insulation from the tank to help cool it.
Fire officials also tested storm drain water and found it was clean, McGovern said.
“There was no contamination,” Orange County Health Director Regina Chinsio-Kwong said at a Monday news conference. “You should feel comfortable going home even if you’re across the street from that new zone line.”
The crisis occurred in central Orange County, which is a densely populated area made up of a cluster of cities including Garden Grove. The city of 170,000 people, along with neighboring Westminster, is home to Little Saigon, the largest Vietnamese community outside Vietnam. It is also next to Anaheim, home to Disneyland’s two theme parks, which were not under evacuation orders.
Garden Grove Unified School District said three schools remained closed and it was unclear if they would reopen before the school year ends this week.
Chinh Nguyen, 62, was among those unable to go back to his home in Stanton. He said the first night of the evacuation, he and his wife and two adult children slept at his wife’s hair salon.
“We slept like dogs on the ground,” he said. “We had no choice. We had nowhere to go.”
They are now at a shelter in a high school in nearby Huntington Beach. He’s grateful for the help but Nguyen said he hopes to return home before food that he left for his 10 parakeets runs out.
The South Coast Air Quality Management District will monitor the air for several months and the EPA will be checking sewer and storm drains for spills, Orange County Supervisor Janet Nguyen said.
As the tank heated up, the chemical converted from liquid to gas, ramping up the pressure and explosion risk, said Andrew Whelton, a Purdue University engineering professor who has studied environmental contamination. Some of the methyl methacrylate may already have hardened into a stable plastic similar to plexiglass, reducing the danger, he said.
“The tank was on track for a catastrophic explosion,” Whelton said. “The formation of a crack seems to have allowed pressure to vent.”
The risk remains of a smaller blast that could send projectiles or even a chemical plume toward nearby homes, he said.
The tank needs to get closer to 60 to 70 degrees Fahrenheit (15.6 to 21.1 degrees C) before conditions are considered significantly safer, he said.
GKN Aerospace Transparency Systems makes cockpit windows, canopies and windshields for military and commercial aircraft. It employs about 16,000 people across 32 manufacturing sites in 12 countries, according to the company website.
“We apologize for the ongoing disruption this incident is causing and our priority remains its safe resolution,” the company said, “so that residents can return to their homes as quickly as possible.”
An earlier version of this story was corrected to attribute a quote to TJ McGovern, interim fire chief of the Orange County Fire Authority, not to division chief Craig Covey.
Weber reported from Los Angeles and Bellisle from Seattle. Associated Press journalists Leah Willingham in Boston; Jamie Stengle in Dallas; and Ethan Swope in Garden Grove, California, contributed to this report.
Two evacuees sit in their pickup truck at a gas station within the evacuation zone in Stanton, Calif., Monday, May 25, 2026. (AP Photo/Jae C. Hong)
An aerial view shows a police checkpoint enforcing a road closure at the evacuation zone boundary in Anaheim, Calif., Monday, May 25, 2026. (AP Photo/Jae C. Hong)
Jan De Jonge and fiancé Sher Stuckman set up a tent with their belonging and pet outside the Elks Lodge in Garden Grove, Calif., on Monday, May 25, 2026. (AP Photo/Ethan Swope)
An evacuation map is displayed at the incident command post at the Los Alamitos Race Course in Cypress, Calif., on Sunday, May 24, 2026. (AP Photo/Ethan Swope)
Water is sprayed on a damaged tank at GKN Aerospace in Garden Grove, Calif., on Sunday, May 24, 2026, after the tank containing a chemical used to make plastic parts overheated Thursday. (AP Photo/Ethan Swope)
People walk outside Freedom Hall, an evacuation center in Fountain Valley, Calif., on Monday, May 25, 2026. (AP Photo/Ethan Swope)
An American Red Cross volunteer walks outside Freedom Hall, an evacuation center in Fountain Valley, Calif.,on Monday, May 25, 2026. (AP Photo/Ethan Swope)
People tend to their pets outside Freedom Hall, an evacuation center in Fountain Valley, Calif., on Monday, May 25, 2026. (AP Photo/Ethan Swope)
