A woman has died at a Premier League football ground, police said.
The 22-year-old was found at the bottom of a stairwell in the early hours of Saturday at Reading's Madejski Stadium.
She was discovered at 12.50am in the Millennium Madejski Hotel, which forms part of the football ground.
She suffered serious head injuries and was pronounced dead at the scene. Next of kin have been informed but she has not been formally identified.
Detective Inspector Phil O'Neil of Thames Valley Police said: "The woman had been attending a Christmas party at the time of the incident.
"We are treating her death as unexplained and there are a number of inquiries taking place to establish the full circumstances of what happened."
A post-mortem examination was due to take place. No arrests have been made.
Anyone with information is asked to call the 24-hour Police Enquiry Centre on 101 or Crimestoppers, anonymously, on 0800 555 111.