Atty. Gen. Phil Weiser also disclosed that his office is investigating whether other law enforcement officers on a regional drug task force the deputy worked on have been sharing information to help federal agents make immigration arrests.

Phil Weiser lawsuit cites Colorado law limiting the authority of state agencies and employees to cooperate with federal immigration officials.

Colorado Attorney General Phil Weiser says a sheriff's deputy has been cooperating with the Trump administration on immigration enforcement, including the detainment of a 19-year-old nursing student.