A convicted loyalist killer is being questioned by detectives in Northern Ireland.
Loyalist killer Michael Stone was released from jail in 2000
It is understood Michael Stone presented himself to police in London and was brought back to Northern Ireland by officers from the PSNI.
He is being questioned in Antrim. It is not yet clear why he is being questioned.
Stone murdered three men at the 1988 funerals of three IRA members killed by the SAS in Gibraltar.
He was released early in June 2000, under the terms of the Good Friday Agreement.
About 60 people were injured as Stone ran through Milltown Cemetery, firing shots and throwing hand grenades.
Security forces caught him at the edge of the cemetery, and he was later sentenced to several life terms.
His autobiography was published in 2003.