Specialist Garda child interviewers have also been called in because of the ages of the alleged victims.
Gardai are investigating allegations of a number of serious sexual assaults near Sligo town over the weekend.
Two teenagers alleged they were assaulted between 8 and 10 pm on Saturday night.
Gardai in Sligo have now begun a criminal investigation.
A house and part of a GAA grounds have been sealed off as potential crime scenes.
Gardai are appealing to taxi drivers, witnesses or anyone with information to contact them.
In particular want to speak to any taxi drivers who may have taken a fare from Sligo to Manorhamilton in Co. Leitrim
