Updated 15.20
It is being reported that the PSNI will seek an extension to Gerry Adams' period of detention.
Deputy First Minister, Sinn Féin's Martin McGuinness, says the decision to extend Adams' detention proves that his arrest was politically motivated
Meanwhile, the Northern Ireland Secretary of State Theresa Villiers has insisted there has been no political interference.
Earlier today, the Tánaiste said Sinn Féin need to realise there aren't separate rules for politicians and other members of the public when it comes to questioning by police.
Eamon Gilmore's comments came after the party hit out at the timing of the questioning of leader Gerry Adams.
The Sinn Féin President has spent a second night at the PSNI's serious crime suite in Antrim where he is being questioned in relation to the abduction and murder of Jean McConville - he denies any involvement in the crime.
Theresea Villiers says "this government has been very clear no-one is above the law":
Villiers also insisted there was no political interference in the arrest:
Speaking in Dublin, Eamon Gilmore hit out at Sinn Féin's attitude to Mr Adams' arrest:
Political analyst Odran Flynn told Newstalk's Breakfast Sinn Féin has probably dented its growing support base after putting Adams' arrest Wednesday down to politically motivated timing.
He is warning the party they are dragging the IRA back into the discussion of Irish politics again:
But Conor Murphy, SF MP for Newry and Armagh disagrees. He says he expects Adams to be released without charge:
Investigators have until 8 O'clock tonight to charge or release Gerry Adams, but an extension can be sought in court.
Family will name killers
Meanwhile, the eldest daughter of the IRA murder victim says she is prepared to name the people responsible for her mother's death.
Helen McKendry says she no longer fears reprisals by republicans.
Her brother Michael has spoken about being taken by a gang at the age of 11 and threatened about keeping quiet.
Michael told Breakfast sentencing of any of those involved would provide closure for him:
Live investigation
PSNI chief constable Matt Baggott has vowed the investigation into Jean McConville's death will be "effective, objective and methodical".
No one has ever been charged with the murder of the widow, who was 37. Jean McConville's body was found buried at a Co. Louth beach in 2003.
But after years without progress in the criminal investigation there have been a series of arrests in recent weeks.
Veteran republican Ivor Bell (77) was charged in March with aiding and abetting the murder. Five other people have been detained and questioned.
The recent police activity followed a decision by a US court to compel Boston College to hand over to the PSNI recorded interviews with republicans about the killing.
Yesterday leaders in the North and South rejected allegations from Sinn Féin about the timing of the arrest being politically motivated.
