A university student has died outside a nightclub after she was reportedly crushed under a fence.
The 20-year-old woman suffered a "serious head injury" near Missoula nightclub in Durham on Wednesday night.
Witnesses reportedly described how she became trapped under a fence as students queued to get into the busy club, before doormen tried to resuscitate her.
One witness, who did not want to be named, told the Northern Echo: "People were barging to get in. The queue has gone around the fence and as they pushed to get in it caused the fence to fall over.
"The girl was trapped under the fence and crushed. There was a fair bit of panic."
The witness said a bouncer took his shirt off to stem the bleeding from the victim's head before delivering CPR with his colleagues.
Another reveller, named only as Jack, described the scene outside Missoula as "complete chaos" and claimed security staff had stopped allowing people into the club shortly before the woman's death.
He told student newspaper The Tab: "People were trying to reason with them, telling the bouncers it wasn't safe and someone was going to get hurt.
"In the end they put a barrier in front of the people at the front, who had been slowly moving forward due to being pushed from behind. Obviously the pushing continued regardless and suddenly the barrier fell and everyone fell on top of it."
One witness, who did not wish to be named, told Sky News that the queue outside Missoula was "always dangerous".
"It's an incredibly sad day for the Durham student body," he added.
Durham Constabulary said it was investigating the incident, adding: "The circumstances surrounding her death are unclear at this time."
The victim has not yet been formally identified and a post-mortem examination is due to take place.
North East Ambulance Service confirmed CPR was already being given to the woman when its crews arrived at the scene.
"At 11.50pm we received a report of an incident outside Missoula in Durham city centre in which someone had received a serious head injury," a spokeswoman said.
"Sadly the patient died at the scene."
Durham University confirmed the victim was one of its students.
Owen Adams, a pro-vice chancellor at the university, said: "We are extremely shocked and saddened by the death of a Durham University student in Durham city last night.
"We are offering support to students and staff.
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"Our thoughts are with the student's family and friends at this very difficult time."
Missoula advertises its Game Over event on Wednesday as Durham's biggest student night. It is in the popular Walkergate area in the city centre, where there are a host of bars and restaurants.
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