Patrick McGee had lived at the house for about 50 years
A man has been decapitated and his head dumped in a wheelie bin outside a house in North Manchester.
Officers were called to a property on Parkhill Avenue in Crumpsall at about 2120 GMT on Monday after being told the occupant had been killed.
They found the body of Patrick McGee, 63, whose head had been severed. A 31-year-old man has been arrested on suspicion of murder.
His brothers said he was a "kind and gentle" man.
Mr McGee had lived in the property for 50 years and was described by his neighbours as popular in the area.
His brothers John and Dennis McGee paid tribute to him in a statement, saying they had been left in shock by his death.
"Patrick would never have hurt anyone, he was such a kind and gentle man. He was a devout Catholic who enjoyed going to church," they said.
"He had lived in that house for 50 years. He had retired early in his 50s to look after our elderly parents, who died in the 1990s, and had lived alone ever since.
"This has come as a terrible shock to us. It is the sort of thing that you read about happening to other people, you never expect it to happen to yourself."
Detectives are continuing to question the man being held on suspicion of Mr McGee's murder and have appealed for anyone with information to contact them.
Det Ch Insp Howard Millington, leading this investigation, said: "This is the shocking murder of a man and our thoughts are with his family at this terrible time.
"We know people must be stunned by what has happened, and the very distressing details that have come out about Patrick's death.
"We want to reassure people that we are working hard to find out exactly what happened to him, and that even more local officers will be patrolling the area than usual tonight."
A post-mortem examination was taking place on Tuesday evening to establish exactly how Mr McGee died.