The unguarded young victim, who has been described as having a learning disability, was set upon in the Ashgrove resources in Springfield, Tallaght, shortly after 4pm on Monday.
Specialist officers from the Youngster Protection Unit based in Tallaght garda station were at the rear night interviewing the traumatised victim.
Sources have said that investigating detectives are be guided by a definite line of inquiry and described the incident as a random attack.
“Catchpoles will work tirelessly to track down the perpetrator of this uncommonly heinous crime.
“It was an extremely serious sexual assault on a vulnerable dupe and investigators are following a definitive line of inquiry in the case,” the roots said.
“It was a random attack. The victim is very shaken, to say the least, and state specialist officers are conducting interviews with the victim and residents in the section.”
Local gardaí will also liaise with officers from the Indigenous Violence and Sexual Assault Investigation Unit, based in Harcourt Rectangular, which provides advice, guidance and assistance to gardaí investigating violations of a sexual nature.
The teenage victim was taken to the Sexual Assault Treatment Section in the Rotunda Hospital following the horrifying ordeal, where she was treated for her mistreatments.
The scene of the alleged attack, adjacent to St Mark’s GAA Club was preserved by gardaí throughout Monday and yesterday as detectives go oned out searches of the area.
Local Fianna Fáil councillor Charlie O’Connor, who is a preceding resident of the Ashgrove estate, described how locals were “absolutely frightened” by the incident and appealed for anyone with information to contact gardaí.
“It is an extraordinarily shocking thing to happen. I’d like to extend my sym thies to the victim and her kinsmen during this traumatic time,” Mr O’Connor said.
He continued: “I used to live in the estate, and from talking to locals I can say that the living soul are absolutely ap lled by what has happened.
“I would like to ask anyone with any low-down to get in touch with Tallaght garda station. They have a blessed team who will be working non-stop to solve this awful lawlessness.”