A man arrested on suspicion of the murder of Karl Bradley has been released on police bail.
31-year-old Karl Bradley was shot three years ago in West Derby in what police believe was a targeted attack.
Detectives who were investigating his death said they had arrested a man in West Yorkshire and had brought him to Merseyside for questioning.
Mr Bradley was shot dead on Penshaw Close, West Derby.
A 27 year-old woman from West Derby who was also arrested on suspicion of assisting an offender has been bailed.