A man has died after he was viciously attacked at the Parklife Weekender music festival in Manchester, England on Saturday (07Jun14).

Robert Hart, 26, was at the event's main stage to watch rapper Snoop Dogg perform when he became embroiled in an altercation with another man after Hart's girlfriend was allegedly hit with an inflatable doll.

Hart was reportedly punched to the ground and knocked unconscious and later died in hospital on Wednesday (11Jun14) despite attempts to resuscitate him at the scene of the incident by two off-duty medical personnel.

Greater Manchester Police Detective Inspector Richard Eales says, "We are still in the early stages of this investigation, however several witnesses have assisted us with vital information concerning the description of the offender. We believe a confrontation took place following an inflatable doll hitting Robert's girlfriend."

The news follows reports of a number of other fights at the outdoor event in Manchester's Heaton Park, with two men stabbed in one altercation and three more injured in a separate scuffle. Neither of the stabbing victims sustained life-threatening wounds.