Gardaí investigating the alleged rape of a middle-aged woman in a south Dublin park have yet to find any trace of the two men she says attacked her.

The 55-year-old woman stumbled into the roadway around Bushy Park in Terenure in the early hours of last Tuesday morning and flagged down a passer-by saying she had been raped.

She was taken to the sexual assault unit at the Rotunda hospital and told detectives she was raped by one of two men who abducted her during a late-night walk.

She claims she was bundled into a black sports car by two teenagers with Dublin accents and taken to the nearby park where she was raped by one of the men as the other looked on.

Gardaí at Terenure immediately launched a major investigation and dozens of local detectives and specialist officers from the National Bureau of Criminal Investigation have spent the past five days searching for the pair.

Although hundreds of hours of CCTV footage from cameras across south Dublin have been sifted through, no trace of the alleged attackers has been found and no other leads have emerged.

Hundreds of local people have been canvassed without success and senior gardaí say they have yet to find any evidence to bring them closer to catching the alleged culprits.

They say they are concerned the woman was too traumatised to give them a detailed statement about her ordeal yet she contacted a newspaper and went into great detail about the events.

The woman lives in Terenure and is suffering from terminal cancer. The attackers are described as being in their late teens and wearing dark clothes at the time.