Police were questioning another man today about the murder of Kevin McDaid who was beaten to death by a loyalist mob.
The 33-year-old was one of two men arrested yesterday in connection with Sunday's killing in Coleraine, Co Londonderry, with the 53-year-old released on bail pending further inquiries.
Six men were charged yesterday with Mr McDaid's murder during a series of court appearances at Ballymena. The suspects denied the charge.
They, and another two men, also denied the attempted murder of Damien Fleming, 46, who was critically injured in the attack.
Some of the men were also charged with assault - Mr McDaid's widow was attacked, as was a pregnant neighbour.
The accused, aged between 18 and 50, appeared one after the other handcuffed to guards at Ballymena Magistrates Court where district judge Philip Mateer was told all denied the charges.
They were remanded in custody to reappear at Coleraine Magistrates Court by video link on June 8.
Over 30 armed riot police ringed more than 70 loyalists who filled the public benches as the men appeared.
Sunday's violence flared when a loyalist mob of up to 40 entered a Catholic area of the town after Rangers beat Celtic to the Scottish Premiership.