An employee of an Arizona Family Dollar store has been charged with murder after police say he fired 10 shots at a shoplifter who punched him.

"Kevin stated he had made the worst decision of his life," police said in his probable cause statement.

Kevin Salas Madrid, 24, has been charged with second-degree murder(Phoenix Police Department)

"Kevin explained he was struck and decided to shoot but looking back, he realized it was egregious."

One employee in the store said that Madrid fired as many as 15 shots and admitted after the shooting that he could not control his anger, Arizona's Family reported.

Fox News Digital reached out to Family Dollar for comment but did not immediately receive a response.