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Man, 70, held on suspicion of withholding information connected to death of IRA informer five years ago
Police in the Republic of Ireland have arrested a 70-year-old man as part of an investigation into the murder of Denis Donaldson, the IRA informer who was shot dead five years ago.
Donaldson, 56, who was once a senior administrator in Sinn Fein, was killed at a remote cottage in County Donegal on 4 April 2006, a few months after he publicly revealed that he had been a paid British informer for 20 years.
The man, who was arrested under Ireland's Offences Against the State Act, was being detained at a Garda station in the Donegal town of Letterkenny, reportedly on suspicion of withholding information.
Last week, Donaldson's family demanded that police in the Republic and in Northern Ireland do more to bring his killers to justice.
In a statement issued through solicitors, they claimed British security agencies had a part to play in his death and called for his former police handler in Northern Ireland to be investigated.
"We believe five years is sufficient time to answer our fundamental questions," said the statement.
"These include serious discrepancies and anomalies in accounts relating to the circumstances leading up to Denis' murder. The Donaldson family cannot investigate those circumstances."
No-one has ever been charged with the murder of Donaldson, who joined the IRA in 1970 and served as the movement's ambassador overseas during the 1980s and 1990s.
He was close to both the Sinn Féin leader Gerry Adams and Martin McGuinness, the party's chief peace negotiator, and worked as the party's head of administration at Stormont before his 2002 arrest as part of a police investigaiton into an alleged Irish republican spy ring.
It led to the collapse of the devolved power-sharing administration at that time but charges against Donaldson and two other men were subsequently dropped.
After admitting to having been an informer, Donaldson was expelled from Sinn Fein and went to live in a cottage in Doochary, near the town of Glenties in Co Donegal, where he was found dead.
