Detectives from the Paramilitary Crime Task Force arrested the boy following the search of a property in south Belfast on Wednesday.

Derek Byrne was pronounced dead at the age of 14 in 1974 but woke up three hours later in a morgue.

Peter McCormack, 42, a Catholic man from Kilcoo, was shot when two gunmen burst into the Thierafurth Inn in the Co Down village

Gary Haggarty also told the trial of James Stewart Smyth at Belfast Crown Court that the UVF knew two murder victims were innocent Catholics.

Loyalist supergrass Gary Haggarty also claimed that the accused was ‘unhappy’ that he had not killed a third man.