Gardai are renewing their appeal for information about Philip Cairns on the 30th anniversary of the schoolboy's disappearance.
The 13 year old went missing in Dublin on the 23rd of October 1986 while walking back to school in Rathfarnham.
Gardai say a number of lines of inquiry are being investigated and they're appealing to anyone with information to come forward.
They believe a number of young people at the time may have information about Philip's schoolbag and didn't come forward at the time, but may be able to now.
An appeal in 2011 saw several members of the public come forward to liaise with Gardai.
