Colorado Attorney General Phil Weiser is suing a Mesa County sheriff's deputy who Weiser says led federal immigration officers to a woman allegedly in the U.S. on an expired visa after a traffic stop.

The Colorado attorney general is suing a sheriff's deputy for his role in the detention last month of a University of Utah student by federal immigration officials.

Colorado's attorney general is suing a sheriff's deputy who Weiser says told ICE officials in an encrypted Signal chat to a woman who was allegedly in the U.S. on an expired visa, in violation of state law.