Paramedics attempted to resuscitate the man at the scene.
Police have confirmed they are launching a murder investigation after the body of a man was found at an address in Bradford.
Three men have been arrested on suspicion of murder, after a man in his 30s was found with facial injuries by ambulance staff at an address in Ashgrove at about 1.30pm on Sunday November 12.
The injuries are thought to be consistent with an assault.
Police were called to the address by the ambulance staff, who said they were attempting to resuscitate the man - but he was pronounced dead by the time they arrived.
Two men, aged 29 and 33, were arrested on suspicion of murder by officers after enquiries at the scene - while a third man, aged 34, was also arrested on suspicion of murder a short time later, in the Great Horton area of Bradford.
All three remain in custody while enquiries are continuing.
Investigations into the man's death are at an early stage and are being led by the Homicide and Major Enquiries Team.
Anyone who may have information which may assist with the investigation is asked to contact the team on 101, quoting crime reference number 13170528561.
Information can also be reported to the independent charity Crimestoppers anonymously on 0800 555111.