Gardai are appealing for witnesses who were at City West Drive, Garter Lane or the nearby luas stops between 11 pm and 1.30am on Sunday night to come forward.
A man in his 20s is still being questioned about the alleged sexual assault of a young child in Dublin.
Tusla has confirmed the 10-year-old girl had been in its care but absconded.
It is understood that the girl was residing at a registered residential placement.
Tusla confirmed the girl went missing after leaving staff during a scheduled recreational outing in the city centre.
The alleged incident took place at the entrance to the Citywest Hotel which is housing international protection applicants.
Gardai are appealing for witnesses who were at City West Drive, Garter Lane or the nearby luas stops between 11 pm and 1.30am on Sunday night to come forward.
the man who is being questioned was due to be deported.

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