Kevin McGuigan murder: man arrested in west Belfast
Detectives investigating the murder of Kevin McGuigan in east Belfast on August 12, have arrested a 47-year-old man in west Belfast.
The man was been taken to Musgrave Serious Crime Suite for questioning on Monday evening.
Father-of-nine Kevin McGuigan was gunned down outside his Short Strand home on August 12.
No group has claimed responsibility but it is believed his killing was in revenge for the shooting of former IRA leader Jock Davison in the Markets area in May.
Police have said they believe members of the IRA were involved in the killing, but that it was not sanctioned at command level.
Sinn Fein has repeatedly stressed the IRA has "gone away".
Detectives have previously made a number of high profile arrests in the case including senior republicans, Bobby Storey, Sinn Fein's northern chairman, Eddie Copeland and Brian Gillen.
All three were released without charge.
Mr Storey's solicitor said he intends to sue for wrongful arrest.
One man has appeared in court charged with weapons offences.