16-year-old transition student Kimberly O'Connor was killed and 2 other teenage boys were seriously injured
The car they were travelling in struck a wall.
Emergency services rushed to the scene on Harbour View Road at 11:45pm.
Both male passengers remain at Cork University Hospital where it's believed one of them is critical.
It's understood Gardai are keen to speak to a taxi driver in a white Toyota who was driving in the area at the time.
The funeral mass of 16-year-old Kimberly O'Connor will take place on Wednesday at Hill Church in Knocknaheeney. She will then be buried at St. Catherine’s Cemetery, Kilcully.
Anyone with any information is asked to contact Gurranabraher Gardai Station on (021) 494 6200 or the Garda Confidential line on 1800 666 111.