GANGLAND double executions are growing increasingly common as hitmen seek to eliminate all eyewitnesses and destroy evidence of the crime.
Victims of an internal power struggle in a Dublin mob, Darren Geoghegan (26) and Gavin Byrne (30) were shot dead as they sat in the front seats of their car.
Gardai believe the two men were lured to their death at Carrigwood estate in Firhouse on November 13, 2005.
A BMW car, which had been stolen from Lisburn, pulled up beside their Lexus. One of the assassins got out of the car, coolly walked up to the Lexus and fired shots into the heads of the two men from Drimnagh and Crumlin.
The warring factions were components of a major drug dealing gang until gardai seized a large €1.5m haul of ecstasy and cocaine at the Holiday Inn in Pearse Street, Dublin, in 2000.
Brothers Paul and Kenneth Corbally were murdered in their car in the Neilstown Road area of Clondalkin on June 28, 2010. Paul (35) and Kenneth (32) were well known to gardai. The hitman pulled up alongside the siblings' car and opened fire.
The 9mm semi-automatic Glock pistol that was found in the burnt-out wreckage of the getaway Audi A6 car that was used in the murder has been traced back to the North.
Both brothers died at the scene and another teenager was injured in the gunfight.
The shootings were the second double gangland assassination of 2010.
Cousins Glen Murphy (19) and Mark Noonan (23) were gunned down in a hail of 15 bullets a minute at a cold-blooded killing at a Tesco petrol station later that year.
Their killers were lying in wait at the forecourt and covered the area with their car three times before the cousins arrived at 11.40pm.
Mr Murphy and Mr Noonan were shot dead as they bought cigarettes at the Tesco Extra shop at Clearwater in Finglas on November 23 2010.
Mr Murphy had a suspected link to the drug trade are being examined.