The PSNI has revealed that a shotgun was used in the murder of prominent loyalist John Boreland in north Belfast.
Speaking at a press conference on Monday afternoon, Detective Chief Inspector Justyn Galloway also ruled out a sectarian motive and said a main focus of investigations was "tensions within loyalism."
He also confirmed Mr Boreland (46) - a member of the Ulster Defence Association who had been the target of a murder bid two years ago - had recently been warned by police of "a real threat to his life."
Mr Boreland was shot a number of times in the Sunningdale Gardens area off the Ballysillan Road at around 10pm on Sunday.
Police are anxious to recover the murder weapon and have appealed to anyone with any information about it's whereabouts - or anything else which could help investigating officers - to contact them.