Updated

Justin Bieber is under investigation by police over whether he directed his bodyguards to beat up a man while acting “like he was in ‘Die Hard’” outside a Southampton club.

The singer could face charges following the brawl at South Pointe in the early hours of Sunday.

Wayne Rennalls, 22, was injured in an altercation with Bieber’s bodyguards which started over a waitress and an H&M bow tie.

Southampton Police Sgt. Todd Spencer told Page Six, “That would be part of the investigation, whether Bieber directed them or not.”

A source told The Post’s Frank Rosario the fight “was all over a little white H&M bow tie. One of the bottle girls liked it, so Wayne let her put it on. Justin was flashing all these girls with his flashlight. The girl with the bow tie went over to Justin and Wayne followed because he wanted his tie back. Then Bieber’s people got in his face . . . he eventually got the tie back.

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PICS: Bieber at the club.

“We thought it was all over, but it escalated outside when we heard Bieber yelling and talking [bleep],” the source continued. “He was screaming in Wayne’s direction, ‘Punk bitch!’ Wayne thought somebody threw something at him. Wayne picked up a small rock and threw it back towards Justin.

“That’s when Wayne heard someone yell, ‘You done [bleep]ed up now.’ Justin jumped out the sunroof of his car and slid down the car like he was in ‘Die Hard’ . . . He dropped his shirt and threw his hat and wanted to throw hands. His people surrounded Wayne, who was getting punched from all angles.”

Reps for Bieber have insisted he was not involved in the incident.

Go to The Post for the full report.