A schoolgirl featured in sex images posted online at the weekend is expected to be interviewed by Irish police before the end of the week.
Gardai also hope to establish if the girl was given drinks spiked with drugs before the images being captured on camera at a concert in the Republic and circulated widely on the internet.
They have been liaising with the PSNI after a young man in the pictures was identified as being from west Belfast.
The person who posted the images was also reported to be from the city.
After the pictures were posted online they went viral, sparking an internet furore.
The girl was taken to hospital after going to police to report a separate sexual assault. She was later released but had to be rushed back after collapsing following the realisation the pictures were all over the internet and she was being targeted in a vicious online campaign.
The distraught teenager is currently at home with her family after undergoing medical tests while officers in the Republic continue their inquiries into the circumstances surrounding the images.
Officers are thought to be anxious to interview the girl to establish a clear timetable of events at the Eminem concert at Slane Castle in Co Meath on Saturday.
They are said to be awaiting the go-ahead from the girl's family and medical advisers before talking to her.
Gardai were also last night investigating a video showing the girl at the centre of the scandal being groped and pushed around by a group of men.
In the meantime, inquiries are being carried out to determine who was present when the explicit photographs were taken and officers are also attempting to the identity those behind posting the images.
Many of the photographs posted on the internet at the weekend have since been removed but others remain or have been re-posted.
Following the publication of the explicit photographs online forums were full of abusive messages condemning and judging the girl pictured.
In response a Twitter trend #SlaneGirlSolidarity was started in support of the youngster.
Kellie Turtle, a member of the Belfast Feminist Network, described the vicious online reaction to the teenager, known as 'Slane Girl' as disturbing and harmful.
Ms Turtle said so-called online "shaming groups" and posts are unfortunately quite common and are for the sole purpose of subjecting females to "sexual bullying".
US rapper Eminem played to an 80,000-strong crowd.
More than 60 arrests were made at the concert for a variety of reasons including assault, drug possession and public order offences.