A 17-year-old boy has been stabbed to death at a house party, with police launching a murder investigation.
Officers from West Yorkshire Police were called to a house party in Salisbury Grove, Armley, at around 2.48am after Yorkshire Ambulance Service were told that a man had been stabbed at a property.
Officers found a large number of people in the house and told them to leave immediately.
A teenage boy, who had serious injuries, was rushed to hospital but was sadly pronounced dead a short time later.
A man who lives across the street from where the house party took place said the music was "a bit loud" but it seemed that everyone was having fun, reports Leeds Live.
He added: "I live opposite the house where the tragedy happened. They are new houses and have only been built a couple of months ago and this was the first party I think to be held there.
"The mood was fine, music was a bit loud but everyone was enjoying themselves. I thought no more of it and went to bed.
"It was only in the morning when I woke up that I saw all the police and the area cordoned off. Sadly the first party to be held there and it’s ended in tears."
Detectives from West Yorkshire Police Homicide and Major Enquiry Team are treating his death as murder.
A scene remains in place around the address in Salisbury Grove to undergo forensic examination and specialist searches.
Senior Investigating Officer, Detective Chief Inspector Alan Weekes said:
"The loss of a young life in such sudden and violent circumstances is an absolute tragedy, and we are treating this incident very seriously and doing everything we can to identify those responsible.
"We are continuing to support this young man’s family at what is clearly an incredibly difficult time for them, and we are committed to getting them the answers they need as we progress our enquiries."