Gerard Butler Gerard Butler is under investigation for an alleged assault.

The Scottish actor apparently clashed with a photographer.

Now Los Angeles police have confirmed they are looking into the incident.

A photographer filed a complaint after following Gerard from the Crown Bar in LA during the early hours of Tuesday morning.

According to reports on TMZ, the photographer in question says Gerard stopped his limo, got out and asked him why he was tailing him.

The pap then replied: "Hey, that's my job" - and says Gerard then reached into his car and punched him in the face three or four times.

The pap required stitches in hospital following the incident, but other paparazzi present at the time of the confrontation say the photographer trailed Gerard for an hour or so after the skirmish occurred, driving "recklessly" - which raises the question of whether the actor was provoked and suggests that his injuries were not too serious.

The police have told TMZ they plan to interview Gerard about the confrontation.

Gerard's people have made no comment as yet over the story.