handcuffsFARGO, N.D. (AP) — Federal authorities have arrested a Fargo man suspected of making threats against U.S. Sen. Heidi Heitkamp of North Dakota. U.S. Capitol Police, with help from Red River Valley SWAT, arrested the man at his south Fargo home on Tuesday morning.

A criminal complaint filed in U.S. District Court on Monday, Jan. 9, charges Kevin Lee Olson  with mailing threatening communications.

Fargo police say he admitted to making the threats last week.

Fargo Police Chief Dave Todd says  threats were made against a North Dakota’s U.S. senator. A spokeswoman for Heitkamp says the Democratic senator was threatened, but that details would have to come from the U.S. Attorney’s office.