MINNEAPOLIS — A federal immigration agent accused of pointing his gun at occupants of a car after pulling alongside them on a Minneapolis-area highway is wanted on felony assault charges, Minnesota prosecutors said Thursday.

Hennepin County Attorney Mary Moriarty said it is the first criminal case against a federal officer involved in the Minnesota immigration crackdown, which was part of a surge of forces into cities including Los Angeles, Chicago and New Orleans.

“There is no such thing as absolute immunity for federal agents who violate the law in the state of Minnesota,” Moriarty told a news conference, saying the agent acted outside the scope of a federal officers’ authority.

An arrest warrant filed in Hennepin County, which includes Minneapolis, says Immigration and Customs Enforcement officer Gregory Donnell Morgan Jr. is charged with two counts of second-degree assault. Minnesota authorities say Morgan, 35, was driving back to immigration offices at the end of his shift when the incident occurred Feb. 5.

The driver and front-seat passenger of a car called 911 saying the driver of an unmarked SUV pulled alongside them, rolled down his window and pointed a handgun at them both. The car’s driver told investigators they feared it was a “crazy person driving down the road aiming guns at people,” according to the warrant.