Justin Bieber is to be investigated by police over whether he instigated a club brawl on Saturday night (03.08.13).

The 'Boyfriend' singer's visit to Southampton, New York, hotspot South Pointe ended in a fight over the weekend and officers are trying to determine whether Justin coaxed his bodyguards into an alleged attack on a fellow clubber.

Southampton Police sergeant Todd Spencer told the New York Post newspaper: ''That would be part of the investigation, whether Bieber directed them or not.''

According to an eyewitness, the 19-year-old star was acting ''like he was in 'Die Hard''' outside the club, where 22-year-old Wayne Rennalls was allegedly beaten up by Justin's security team after butting heads with the singer over a bow tie.

Wayne reportedly gave his white H&M accessory to a waitress after she complimented it. The female worker then went over to Justin's roped-off VIP area to provide bottle service and Wayne followed in order to get his bow tie back - leading to a heated exchange with the star and his security.

A source said: ''Wayne followed because he wanted his tie back. Then Bieber's people got in his face.

''We thought it was all over, but it escalated outside when we heard Bieber yelling and talking s**t. He was screaming in Wayne's direction, 'Punk b***h!' 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 f***ed up now.' Justin jumped out the sunroof 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.''

Wayne reportedly suffered a black eye, busted lip and bruised ribs following the altercation and filed a police report the next day.