An ICE agent who fatally shot a Colombian migrant in Maine is reported to have a history of violent behavior and mental health issues, according to family members and court documents. David Brouillette, 37, a former military personnel recently employed by ICE, shot Johan Sebastian Duran Guerrero, 25, during a check in Biddeford. Authorities claim Duran Guerrero attempted to flee, prompting Brouillette to use his weapon out of concern for bystanders, but the incident is under investigation. Family members allege years of violent conduct, including accusations of domestic abuse from former spouses and documented requests for protection orders. Brouillette was reportedly diagnosed with bipolar disorder, raising questions about the vetting process for ICE employees amid increased hiring under stricter immigration policies. The agent, currently on administrative leave, maintains he acted in self-defense, but ICE has not commented on the specific allegations.