Sinn Féin leader Gerry Adams has been released by the PSNI after questioning about the murder of Jean McConville in 1972.
He had been held for four days after presenting himself to Antrim police station.
The 65-year-old was released without charge and a file is being prepared for the Public Prosecution Service.
Loyalist protesters attempted to block the road in front of the station to prevent his release but he left by the back gate.
Jean MConville, a 37-year-old a mother of ten, was abducted from her home at Divis Flats in Belfast as her children watched in horror.
She was killed and buried in a secret location: her remains were found at a beach in Co. Louth in 2003.
Speaking at a news conference after his release, Adams said he was “innocent of any involvement in any conspiracy to abduct, kill or bury Mrs McConville.
He said he supported the McConville family in their quest for justice.
He was “concerned about the timing,” of his detention, he added, in the run up-to local and European elections.
Adams repeated Sinn Féin’s commitment to the political process: “The IRA is gone, it’s finished.”
He also reaffirmed his support of the PSNI.