A man in his early 20's is in critical condition after being shot in the back of the head Tuesday night in Hartford, police said.

The victim was taken to Hartford Hospital, police said. Authorities are not yet releasing his name.

He was found in the first-floor bedroom at 30 Sisson Avenue at 10:30 p.m. He had multiple bullet wounds in the back of the head, police said. Officers have not located witnesses or suspects.