Mr Corey was jailed in 1973 for his part in the IRA murders of two RUC officers and was released on licence in 1992.The Lurgan man's licence was revoked almost four years ago because he was considered to still pose a risk to the public.However he was freed on Wednesday evening on the instructions of the Secretary of State.Welcoming the news, Sinn Féin MLA for West Belfast Jennifer McCann said: "It is almost four years since the arrest and detention of Martin Corey. At no time was he questioned by police or were his legal team shown evidence against him."I am glad that he is now released and free to return to his family."There are very clear lessons which present themselves to the British government. The arrest and detention of people without any evidence being presented cannot be justified in any terms."