The European Court of Human Rights has rejected a request by Ireland to refer the case of the 'Hooded men' to the court's Grand Chamber.
The 14 hooded men were among 350 people arrested and interned without trial at the start of the Troubles in the North in 1971.
The men alleged they had been tortured at a British Army camp in Co Derry where they were deprived of sleep, food and water, and thrown blindfolded from helicopters.
In 1978 the government took legal action against the UK to the ECHR which ruled the men had been subjected to degrading and inhumane treatment, but had not been tortured.
In 2014, following an RTÉ Investigates documentary, which showed the British government was aware of the psychological effects of the techniques, the Irish government appealed the 1978 decision.
However, that appeal was rejected by six votes to one earlier this year.
The Government then asked the ECHR to refer the case to the court's Grand Chamber.
In a decision released this afternoon the court said that request had been refused by a panel of five judges.
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