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 to firing the shots that claimed the life of 25-year-old Johan Sebastian Duran Guerrero 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 to “cover for his character,” describing him as “unusually calm.”
Brouillette was a new recruit when he fatally shot Guerrero in his vehicle about 7 a.m. at the intersection of Pool and Hill streets. The Atlantic magazine earlier reported that the ICE agent who shot Guerrero was hired this year, but his identity wasn’t verified on the record until Thursday.
While the Maine State Police and other law enforcement agencies typically immediately release the name of officers involved in shootings, federal officials have refused to identify or share any information about the officer who killed Guerrero. The Maine attorney general’s office, which is doing its own parallel investigation, has also declined to comment.
Employment records obtained by the Bangor Daily News show that Brouillette used to work for the police department that safeguards the Togus VA Medical Center campus and spent a brief stint as Maine prison guard before that.
The Togus VA Police Department hired Brouillette police department in March 2017, according to a notice of employment record filed with the Maine Criminal Justice Academy, which oversees the certification of law enforcement officers in the state. It is unclear when he left that job. He appears to have contemplated a career in real estate last year, according to a license he obtained in April 2025 that went inactive in December.
Prior to working at 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 Nov. 30 2015 to August 2016.
The Press Herald reported that Brouillette worked two brief stints for the volunteer fire department in Manchester, where he lives, but was “removed” for shouting and refusing to follow a supervisor’s orders.
An ICE spokesperson claimed this week that Guerrero was in the country illegally and had a final removal order against him. But Homeland Security Secretary Markwayne Mullin, who previously suggested Guerrero had “weaponized” his white Kia, told U.S. Sen. Angus King that Guerrero wasn’t actually the target of the agents’ administrative warrant.
Two immigrant advocacy groups here, Maine Immigrants’ Rights Coalition and Presente! Maine, said in a joint statement that Guerrero, who leaves behind a wife and young daughter, had authorization to work in the United States and had been issued a Social Security number.
The ICE agents weren’t equipped with body cameras, for which Congress approved $20 million in funding this year, meaning there’s apparently no direct video evidence of what happened between Guerrero and them in the moments before the shooting.
In the aftermath of Guerrero’s death, ICE has temporarily halted most traffic stops. The death of Guerrero, and that of 52-year-old construction worker Lorenzo Araujo in Texas last week, happened during a traffic stop. On Wednesday morning, President Donald Trump ratcheted up pressure on ICE to reverse course on the policy shift.
Several federal, state and local law enforcement agencies are participating in the investigation, which the Colombian embassy said it will be monitoring as it stays in touch with Guerrero’s family here. On Tuesday, Colombian President Gustavo Petro called the shooting murder, saying that Guerrero was “killed because he was deemed an inferior being devoid of rights.”
In a Tuesday letter to Homeland Security Inspector General Joseph Cuffari, Maine’s congressional delegation called for him to “prioritize” a “comprehensive, transparent, and expedited investigation” into Guerrero’s death, while Gov. Janet Mills has pushed U.S. Sens. Susan Collins and King and U.S. Reps. Jared Golden and Chellie Pingree to reform ICE or to abolish altogether.
This may be at least the 11th fatal shooting involving ICE agents since President Donald Trump’s second inauguration. That doesn’t 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 33 who died last year, according to the National Immigration Project.
Earlier this year, Maine became the latest state to see a surge in ICE agents as part of the Trump administration’s Operation Catch of the Day. That surge was cut short amid a nationwide pushback against the agency’s tactics following the fatal shootings of two protesters in Minneapolis.
Of the nearly 200 detained in Maine during the January ICE surge, only 11 had criminal convictions, undercutting the Trump administration’s claim that it was targeting the “worst of the worst.”