Police say they've arrested a man who intentionally assaulted U.S. Sen. Rand Paul, causing a minor injury.

Rene Boucher, 59, of Bowling Green, is charged with one count of fourth-degree assault and is being held in the Warren County Detention Center, according to a news release from Kentucky State Police.

Police responded to a report of an assault at Paul's Warren County, Ky., residence just before 3:30 p.m. Friday. They determined Boucher had intentionally assaulted the junior senator, according to the release. It was not immediately clear what injury Paul suffered.

A spokeswoman for Paul's office said in an email that the senator was "blindsided."

"Senator Paul was blindsided and the victim of an assault," it stated. "The assailant was arrested and it is now a matter for the police. Senator Paul is fine."

The investigation is ongoing.

A court website shows that Boucher was booked Friday night just before 9 p.m. He's being held on $5,000 bond and there is no court date set.