A man found dead at a flat in South Belfast was subjected to a vicious assault, police said.
George Gray, 52, was discovered by a friend at his flat in the Cregagh Road area and detectives believe he was murdered.
Investigators said he was a quiet man who kept to himself and enjoyed football.
Two men aged 29 and 34 remain in police custody and searches have been carried out in the area.
Detective Inspector Chris Wilson said: "A post mortem is being carried out but we believe he died following a vicious assault."
He was found at 5pm on Friday night and was last seen around 9pm on Thursday evening.
Police are trying to piece together the events before the time of death and when his body was discovered.
They also appealed to the driver and passenger of a silver-coloured Ford Fiesta seen parked outside the property around 5pm on Friday evening just before Mr Gray was found to come forward so that they can rule them out of the investigation.
DUP Assembly member Robin Newton said: "It is extremely worrying that another violent incident has arisen in East Belfast leading to a loss of life. The police arrests of two men will give the entire community cause for concern.
"There will much disquiet in the area until all the facts are known with many of the direct neighbours left feeling uneasy."