Parklife death: Woman 'may have filmed attack'
Police have issued a new image of a woman they believe may have filmed the attacker who killed a man at a festival.
Robert Hart, 26, of Macclesfield, Cheshire, died in hospital four days after he was assaulted at Manchester's Parklife Festival in June.
He was attacked by a man before Snoop Dogg was due to go on stage.
Officers are trying to trace a woman who may have captured the incident on a mobile phone camera.
The fresh appeal comes after police issued images of 12 people who were around the main stage of the Heaton Park event.
Eight have been traced, but of the remaining four, the woman is of "particular interest", police said.
Det Ch Insp Phil Reade, of Greater Manchester Police, said: "Our trained officers have examined a huge amount of pictures and video footage sent in by festival goers and have determined that this woman may well be of assistance to our investigation.
"The time at which she was photographed, the area she was stood, the direction she was facing and the fact she seems to be taking a video or pictures of the area where Robert was standing all suggest that she may well have captured a picture of the man responsible or the people he was with.
"Obviously, obtaining evidence such as that would represent a big step forward in this investigation and take us closer to catching the man responsible for this attack."
Mr Hart was attacked after an argument which escalated when he was hit with an inflatable doll by the stage.
A £20,000 reward is being offered by the festival organiser and Crimestoppers is offering an additional £3,000 to help catch the man responsible for Mr Hart's death.