A Bowling Green man was arrested for assaulting U.S. Sen. "Senator Paul is fine", the statement read. Kentucky State Police say Paul had minor injuries.
A spokeswoman for Paul said the senator was "blindsided" by the assault but did not provide more details.
Troopers say Bousher intentionally assaulted Paul causing a minor injury. Stay with 8News online and on air for the latest updates.
Paul was mowing his lawn at the time of the attack, neighbors told the local NBC affiliate, and had ongoing problems with Boucher.More news: Saudi intercepts missile targeting Riyadh from Yemen
It is not known if Senator Paul knew his attacker.
"Kelley and I appreciate the overwhelming support after Friday's unfortunate event", Paul tweeted. He was being held at Warren County jail on Sunday on $5,000 bond, state police said.
Police allege Boucher, 59, "admitted going onto Paul's property and tackling him", the warrant said. It's a cloth vest partially filled with rice and secured by Velcro straps that is created to relieve back pain by delivering heat directly to the areas of the back where most pain is felt.More news: Republicans Uniting Over Reveal That Clintons and DNC Were Behind Russia Conspiracy
Records show Boucher's home is also in Bowling Green.
CNN was unable to reach a representative of Boucher on Saturday night.
The threats turned to violence during the summer when House Majority Whip Steve Scalise, R-La., was shot and almost killed by a gunman who showed up at a congressional baseball practice in Alexandria, Virginia.More news: Australian court disqualifies Deputy PM Barnaby Joyce over citizenship