Another man was arrested today for questioning about the murder of a former gravedigger.
He joined three men who have been in custody since being detained yesterday by detectives carrying out searches in Carrickfergus, Co Antrim, where Tommy Hollran (49) was beaten to death on Saturday.
Mr Hollran was attacked after defying an order to stay out of his home town. It is believed he had been told to leave Carrickfergus late last year following a dispute with loyalist paramilitaries.
But he travelled by train from Belfast, where he was living in a hostel after splitting with his wife, to visit relatives.
Mr Hollran was attacked in an alleyway as he walked from the station and suffered serious head injuries. He died in hospital on Sunday.
Detectives say paramilitaries may have been involved in the killing.