A man dropped dead from a heart attack and four others have been arrested after an all-in brawl between guests at two weddings that was captured on film.

Police were called to the Sheraton Society Hill hotel in Philadelphia at 1.30am yesterday morning to break up the melee which involved around ten guests from two weddings.

A woman in a long white dress appears to be knocked to the ground and the narrator of the YouTube clips then says "did they just deck the bride?"

A 57-year-old man, thought to be an uncle of the bride, was found unconscious at around 2am and taken to Jefferson University Hospital. He was pronounced dead at 2.51 am, having suffered a heart attack.

While the cause of the fight is not yet known, eyewitnesses say the brawl began in the lobby of the hotel.

Two guests were charged with disorderly conduct and another two with assaulting a police officer.
The hotel's general manager declined to comment on the incident as it is under investigation by the police.