An Immigration and Customs Enforcement agent in Maine fatally shot a man in his car on Monday, the Department of Homeland Security said, marking the second time in a week that ICE officers have used deadly force in the U.S. DHS alleged the man - who was in the country illegally - had attempted to flee the scene when ICE tried to stop him at around 7 a.m. ET in Biddeford, Maine, and fearing for public safety, an officer discharged his weapon. He later died from his injuries. DHS said ICE agents encountered the man while conducting targeted surveillance on the last known address of an illegal alien with a final order of removal. Maine Sen. Angus King was briefed on the shooting by DHS Secretary Markwayne Mullin, and told reporters in Portland the deceased man had been given a final order of removal. Mullin told King later Monday that the man was not the intended target of an arrest warrant, King's office told CBS News. When speaking earlier with reporters, King initially said the man was the target of a warrant based on his immigration status. Democratic Rep. Chellie Pingree of Maine said on CBS News 24/7's The Daily Report that she had heard on good authority, though it's not been confirmed by [DHS], that they perhaps shot the wrong person, that it was not the person they were going after. She called the shooting very disturbing and said she is pressing DHS for more information. An immigrant rights group said the man killed in the shooting was Colombian. He was in a vehicle, pulled out in the vehicle, and the term the secretary used was 'weaponized' the vehicle, King told reporters. He was shot by an ICE agent. What I said to the secretary was we want a full, transparent and open investigation of this matter. The agents involved in the shooting weren't wearing body cameras, King said, which he said concerned him. Sen. Susan Collins, a Maine Republican, said on social media she was told that the Department of Homeland Security's inspector general will take the lead on investigating the shooting, with help from the FBI. The state attorney general's office, which is al #cbsnews #crimewatchdallas