Hundreds of people have taken part in a remembrance rally to mark the 30th anniversary of the disappearance of Philip Cairns. 

The 13-year-old went missing on 23 October 1986 while making his way back to Coláiste Éanna in Rathfarnham, where he was a first-year student.

Six days later his schoolbag was found dumped in a laneway metres from his home on the Ballyroan Road in Rathfarnham.

This afternoon a remembrance event was held in the laneway by members of the community.

At 1.30pm, the time he left his home after his lunch break, flowers were placed at the spot where his schoolbag was found.

They then walked to Rathfarnham Garda Station to hand in a petition calling for justice for Philip. 

Gardaí issued a fresh appeal for information this weekend.

Earlier this year, a woman came forward to gardaí with new information.

The woman told gardaí that convicted paedophile Eamon Cooke may have killed Philip at the studios of his pirate radio station in October 1986.

Superintendent Peter Duff said he believes there are people who were young at the time and may have information in relation to Philip's school bag and for whatever reason did not come forward.

He believes they may be in a position to assist gardaí now who are investigating a number of lines of inquiry.