A 23-year-old man has died after being stabbed on the dancefloor in a nightclub in Birmingham.
West Midlands Police said a murder investigation has been launched.
Officers were called to The Crane nightclub on Adderley Street, Digbeth just before 11.45pm on Boxing Day.
Despite efforts to save him, he was pronounced dead around half an hour later, police added.
Detective Inspector Michelle Thurgood, who is leading the investigation, said: “This was a young man enjoying himself with friends on a Boxing Day night out and our thoughts are with his friends and family today.
“We know there were hundreds of people in the nightclub at the time. While we’ve spoken to a number of them already, we still need to hear from anyone who was there and who witnessed or even filmed what happened.
“We believe that the victim was approached by a group of people, and was then stabbed, so we’re working hard to identify all of those involved.”
Detectives are viewing CCTV from the nightclub and urge anyone who was in the area to get in touch.