Gardai are investigating a case of rape and false imprisonment that allegedly happened close to Dublin city over both Saturday and Sunday.
A 24-year-old man was arrested and questioned by gardai after a distressed 18-year-old woman raised the alarm.
The man is currently on bail for another offence he is currently charged with.
It is understood the young victim was with her attacker for a period of time before the attack but at that stage did not know he could potentially pose a threat to her.
Gardai have sought CCTV footage from different areas of the city including the Dart line as part of their investigations.
A large area of the former Irish Glass Bottle site was also searched by gardai.
Traders in the have also been interviewed to see if they can shed any light on the movements of the victim or the attacker.
The young woman told Gardai she was later held against her will by the man and repeatedly attacked.
Gardai arrested the suspect after the victim escaped from him and raised the alarm.
He was questioned at Irishtown garda station and then released on Tuesday.
Local sources say the glass bottle site has had sections of its security failings cut over the years, allowing people access to the massive site earmarked for future development.
“There was several people living rough down there in tents and things. Then I saw the gardai in there on Tuesday carrying out searches. It's terrible news,” said one man.
Local councillor Chris Andrews said residents are "horrified and very concerned".
He said he has requested Irishtown gardai to increase their presence in the area through supervision.
“It is scary and it is shocking for residents and people with children. It is understandable but it isn’t a call for a mass panic,” he added.
The girl's family are understood to have flown to Dublin from Spain to comfort her.
Gardai investigating the case have arrested a suspect and he was questioned at Irishtown garda station before being released without charge.
A file on the case is being prepared for the Director of Public Prosecutions.