Alexandria Police Dept.

Sen. Mike Crapo (R-Idaho) in a photo released by the Alexandria Police Department, Dec. 23.

U.S. Sen. Mike Crapo of Idaho was arrested early Sunday morning in a suburb of Washington, D.C. for driving under the influence, according to a statement released by Alexandria, Va. police.

Crapo, a Republican, was stopped after a patrol officer saw his vehicle go through a red light. After failing field sobriety tests, he was arrested at 12:45 a.m. and “taken into custody without incident,” according to the statement by Alexandria police.

"There was no refusal (to take sobriety tests), no accident, no injuries," Alexandria Police spokesman Jody Donaldson told The Associated Press. "Just a traffic stop that resulted in a DUI." 

In a statement Sunday night, Crapo said he was “deeply sorry.”

“I made a mistake for which I apologize to my family, my Idaho constituents and any others who have put their trust in me,” he said. “I accept total responsibility and will deal with whatever penalty comes my way in this matter. I will also undertake measures to ensure that this circumstance is never repeated."

Crapo (pronounced KRAY-poh) was released around 5 a.m. Sunday on an unsecured $1,000 bond. His court date is set for Jan. 4. 

Crapo has served in the Senate since 1998, where he has built a reputation as a staunch social and fiscal conservative. He is currently in his third term and won't have to run again until 2016.

A Mormon from Idaho Falls, Idaho, he has five children with his wife, Susan.

NBC's Frank Thorp and The Associated Press contributed reporting.