criticised the timing of his arrest over the IRA m
Sinn Féin leader Gerry Adams has criticised the timing of his arrest over the IRA murder of Jean McConville.
Speaking after his release following four days of questioning, Mr Adams said there was a "sustained, malicious, untruthful campaign" alleging his involvement in the 1972 killing.
A file will be sent to the Public Prosecution Service, police said as he was released.
Mrs McConville's son said the family's fight for justice would continue.
Jean McConville, a 37-year-old widow, was abducted from her Belfast home, shot and secretly buried.
Her body was found on a beach in County Louth in 2003.
"The McConville family is going to stay to the bitter end until we get justice," Michael McConville said.
"These have been quite difficult days for the McConville family and they have been very stressful. We would like the people to know that the family is going to stay to the bitter end until we get justice for our mother.
"We know it is going to be a long road, but we have already been fighting for justice for 40 odd years and we are not going to stop now."
Michael McConville: "These have been difficult days for the McConville family"
Speaking at a press conference in Belfast following his release on Sunday evening, Mr Adams said he had contacted Northern Ireland police two months ago about the McConville case.
He said he had gone voluntarily to police last week and then been arrested. He questioned their timing in the middle of an election campaign and claimed they could have used discretion rather than arresting him. They did not need to use "pernicious, coercive legislation to deal with a legacy issue", he said.
The Sinn Féin leader said police had conducted 33 taped interviews and detectives had presented him with old photographs of himself and Deputy First Minister Martin McGuinness and with interviews conducted by people who were "enemies of the peace process".
He added he did not go to Antrim police station "expecting special treatment", but said his arrest had sent out the "wrong signal".
Mr Adams, a former MP for West Belfast and now an elected representative for County Louth in the Irish parliament, presented himself for interview by prior arrangement with detectives on Wednesday night. He was then arrested under the terrorism act for questioning about the IRA murder of mother of 10 Mrs McConville.
At Sunday's press conference, he again said he was innocent of any involvement in her murder.
He said Sinn Féin remained fully committed to the political process in Northern Ireland. "The IRA is gone, it's finished," he added.
"I want to make it clear that I support the PSNI."
Prime Minister David Cameron discussed Mr Adams' release on Sunday night during a phone call with Irish Prime Minister Enda Kenny 心爱的星球大战爱情双关语 浪漫的连接有山水有相逢 婴儿潮活得寿命更长 猫王耐心竖琴婚礼 源材料偏离权力的游戏 科學奇跡驚喜的元素 動物象徴恐竜 Sixteen Candles Molly Ringwald 落梅奇妙又孤寂 國會減肥一針見血.