Gardai have travelled to England to interview a former girlfriend of a notorious gangster about the shocking double murders of two innocent cousins in Dublin.
The woman is the latest ex-partner attached to the gang who murdered Glen Murphy (19) and Mark Noonan (23) to be interviewed by detectives.
She had no involvement in the gruesome killings when the two men were shot dead in a case of mistaken identity over four years ago.
The cousins were gunned down on the forecourt of the Tesco Clearwater filling station on November 23, 2010.
Sources have revealed that the woman met investigating officers from Finglas Garda Station by appointment after she was tracked down by English police. She was not arrested.
It is understood she was wanted for questioning because of her relationship with a senior member of the mob who were involved in organising the brutal double murder.
However, gardai were unable to get any additional information about the north Dublin slaying.
The questioning of the woman came almost four months after detectives arrested a different woman in north Dublin and questioned her about the double murder - as well as the murder of Real IRA terror chief Alan Ryan in September, 2012.
The 27-year-old Kilbarrack woman, who now lives in Northern Ireland, was later released without charge. Sources say that gardai have built up a clear picture of exactly who was involved in the brutal slayings.
Dubliners Glen Murphy (20), of O'Devaney Gardens, North Circular Road, and Mark Noonan (23), Drumalee, North Circular Road, were shot dead at the service station in Finglas after they went there to buy sweets and cigarettes.
Mr Noonan was hit in the back of the head while Mr Murphy was shot in the head and stomach as he scrambled to get away from his killers.
Gardai believe they were followed by a gang using a tracking device which had mistakenly been put in the car they were travelling in.
Sources say Mr Noonan's Toyota Avensis car was very similar to a car which was driven by the intended targets - two feared Coolock drug dealers who survived several attempts on their lives between 2008 and 2010.
The intended targets were in a bitter feud with a rival mob led by the so-called 'Mr Big' crime organisation.
An inquest into the deaths of Noonan and Murphy was adjourned earlier this year until June 5 next year as the hunt for the killers continues.