The U.S. Immigration and Customs Enforcement agent who shot and killed a Colombian man in Biddeford this week has been identified.
David Brouillette, 37, reportedly admitted firing the shots that killed Johan Sebastian Duran Guerrero, 25, during a phone call with his ex-wife Ashley Brouillette shortly after the shooting, she told the Portland Press Herald.
Ashley Brouillette told the newspaper that her ex-husband asked her to “lie for him” and “cover his temper,” describing him as “unusually calm.”
Brouillette was a rookie when he fatally shot Guerrero in his car at the intersection of Poole and Hill streets around 7 a.m. The Atlantic previously reported that the ICE agent who shot Guerrero was hired this year, but his identity was not confirmed in the report until Thursday.
While Maine State Police and other law enforcement agencies typically immediately release the names of officers involved in shootings, federal officials have declined to name or release any information about the officer who killed Guerrero. The Maine Attorney General’s Office, which is conducting its own parallel investigation, also declined to comment.
Employment records obtained by the Bangor Daily News show Brouillette previously worked for the police department that policed the Togus VA Medical Center campus and before that briefly worked as a corrections officer at the Maine State Penitentiary.
The Togusa, Va., Police Department hired the Brouillette Police Department in March 2017, according to a hiring notice filed with the Maine Criminal Justice Academy, which oversees the certification of law enforcement officers in the state. It is unknown when he left this job. Based on the license he received in April 2025, which became inactive in December, he appeared to be considering a career in real estate last year.
Before joining Togus, he worked for less than a year as a corrections officer at the Maine Correctional Center, a state prison in Windham, records show. He worked there from November 30, 2015 to August 2016.
The Press Herald reported that Brouillette had two stints with the volunteer fire department in Manchester, where he lives, but was “fired” for yelling and refusing to obey his chief’s orders.
An ICE official said this week that Guerrero was in the country illegally and that it had a final order for his removal. But Homeland Security Secretary Markwayne Mullin, who previously suggested Guerrero had “weaponized” his white Kia, told U.S. Sen. Angus King that Guerrero was not in fact the subject of the agents’ administrative warrant.
There are two immigrant rights groups here: the Maine Immigrant Rights Coalition and Presente! Meng said in a joint statement that Guerrero, who is survived by a wife and young daughter, had authorization to work in the United States and a Social Security number.
ICE agents were not equipped with the body cameras for which Congress approved $20 million in funding this year, meaning there is apparently no direct video evidence of what happened between Guerrero and them in the moments before the shooting.
Since Guerrero’s death, ICE has temporarily stopped most traffic stops. The deaths of Guerrero and 52-year-old construction worker Lorenzo Araujo in Texas last week occurred during a traffic stop. On Wednesday morning, President Donald Trump increased pressure on ICE to reverse course on policy changes.
The investigation involves multiple federal, state and local law enforcement agencies, which the Colombian embassy said it will monitor as it maintains contact with Guerrero’s family here. On Tuesday, Colombian President Gustavo Petro called the shooting a murder, saying Guerrero was “killed because he was considered an inferior being with no rights.”
In a letter Tuesday to Homeland Security Inspector General Joseph Caffari, Maine’s congressional delegation called on him to “prioritize” a “comprehensive, transparent and expedited investigation” into Guerrero’s death, while Gov. Janet Mills pushed U.S. Sen. Susan Collins, as well as King and U.S. Reps. Jared Golden and Chelly Pingree, to reform ICE or abolish it outright.
This could be at least the 11th fatal shooting involving ICE agents since President Donald Trump’s second inauguration. This does not include deaths of those in the agency’s custody. As of July 6, at least 21 people have died in immigration detention centers in 2026, on top of the 33 who died last year, according to the National Immigration Project.
Earlier this year, Maine became the latest state to see an influx of ICE agents as part of the Trump administration’s Operation Catch of the Day. That surge was cut short amid nationwide opposition to the agency’s tactics following the killing of two protesters in Minneapolis.
Of the nearly 200 people detained in Maine during ICE’s January wave, only 11 had criminal convictions, undercutting the Trump administration’s claim that it is targeting the “worst of the worst.”