Sen. Mike Crapo, R-Idaho, said Sunday he “will undertake measures to ensure that this circumstance is never repeated.”

Police in Alexandria, Va., said the three-term senator from Bonneville County failed field sobriety tests after an officer saw Crapo’s vehicle run a red light and pulled him over about 12:45 a.m. Sunday.

“There was no refusal (to take sobriety tests), no accident, no injuries,” Alexandria police spokesman Jody Donaldson said. “Just a traffic stop that resulted in a DUI.”

Crapo, who was alone in his vehicle, registered a blood alcohol content of 0.11, police said. The legal limit in Virginia is the same as in Idaho — 0.08.

The senator was taken to jail, then released on an unsecured $1,000 bond about 5 a.m., police said. He is charged with misdemeanor driving under the influence.

On Sunday evening, Crapo’s staff issued a statement from the senator.

“I am deeply sorry for the actions that resulted in this circumstance,” Crapo said. “I made a mistake for which I apologize to my family, my Idaho constituents and any others who have put their trust in me.

“I accept total responsibility and will deal with whatever penalty comes my way in this matter,” the statement continued. “I will undertake measures to ensure that this circumstance is never repeated.”

Crapo’s Idaho Chief of Staff John Hoehne confirmed that the DUI arrest involved alcohol but offered no further comment.

Crapo's congressional colleagues said they're surprised the three-term Republican is in this situation. Idaho's junior U.S. Sen. Jim Risch offered his support, saying Crapo made a mistake and has apologized.

“Senator Crapo has acknowledged that he made a serious mistake and he has apologized for his actions. As a friend and colleague, I offer my support and help to him in any way I can. Senator Crapo has worked hard on behalf of Idahoans for many years and I have full confidence that Senator Crapo will continue his dedicated and unselfish service to the people of Idaho.”

Donaldson and Crapo’s staff said they didn’t have information on where Crapo was coming from or headed toward when he was pulled over.

The senator’s initial court date has been set for Jan. 4.

Crapo, 61, was first elected to the U.S. Senate in 1998 and won’t be up for re-election to a fourth term until 2016. Before joining the Senate he served for six years in the U.S. House of Representatives and eight years in the Idaho State Senate

In Congress, Crapo has built a reputation as a staunch social and fiscal conservative. It has been expected he would take over the top Republican spot next year on the Senate Banking Committee. He also serves on the Senate’s budget and finance panels. Crapo was a member of the so-called “Gang of Six” senators who worked in 2011 toward a deficit-reduction deal that was never adopted by Congress.

A Mormon from Idaho Falls, he was named a bishop in the church at age 31. He has five children with his wife, Susan, and three grandchildren. He is an attorney who graduated from Brigham Young University and Harvard Law School.

The Idaho Democratic Party said it was surprised and dismayed by Crapo's arrest, saying he showed bad judgment "and failed to uphold the basic standards of conduct that Idahoans expect of our elected public servants," according to a prepared statement.

"Unfortunately, Sen. Crapo joins a growing list of elite, GOP elected officials who have embarrassed Idaho on the national stage in recent years," the statement reads. "We deserve better."