Patrick McGee had lived at the house for about 50 years
A man was stabbed to death before his head was dumped in a wheelie bin outside his North Manchester home, a post-mortem examination has concluded.
Patrick McGee's severed head was found in the bin on Parkhill Avenue in Crumpsall on Monday night.
The 63-year-old's body was found by police inside a house on Parkhill Avenue shortly afterwards.
A 31-year-old man who was arrested on suspicion of murder remains in police custody for questioning.
Mr McGee had lived in the property for 50 years and was described by his neighbours as popular in the area.
Police have said the murder was "shocking".
Det Ch Insp Howard Millington 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."
Mr McGee's 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 have appealed for anyone with information to contact them.