A festivalgoer at the T In The Park concert in Scotland has been admitted to hospital after being stabbed at the event.
Tayside police said a 22-year-old man suffered multiple wounds when he was attacked in the yellow zone of the festival's campsite in the early hours of Sunday morning. The site has been cordoned off and a forensic examination is currently taking place.
The victim is said to be in a stable condition in hospital now.
Detectives said they were searching for two men, who are likely to be wearing blood-stained clothing.
The first man was described as white, about 6ft 1in tall, of skinny build with short, dark brown hair. Police said he was wearing a white tracksuit top at the time.
The second suspect is said to be white, about 5ft 8in tall, of medium build and with short, dark brown "mullet-style" hair. He was seen in a red tracksuit top during the attack.
Amy Winehouse, REM, the Hoosiers and the Prodigy are set to perform at the three-day festival's final day today.
Music fans have seen over 150 acts including The Verve, Kaiser Chiefs, Chemical Brothers and Interpol at the festival which started on Friday.