Pitt was at the Hollywood premiere of “Maleficent,” starring his partner Angelina Jolie on Wednesday night, when a man hopped a barrier and apparently attacked the actor, Los Angeles Police Sgt. Leonard Calderon said.
The suspected attacker is 25-year-old Vitalii Sediuk, a serial troublemaker at celebrity events.
Police did not say whether Pitt was punched or slapped, just that the attacker struck him in the face. Sediuk was arrested on suspicion of battery, police said.
Sediuk has a history of confronting celebrities at red carpet events. In 2012, he was slapped by actor Will Smith after he attempted to kiss Smith.