Orange North Face Bag taken from Killiney Beach (Northern End)

Whilst carrying out a volunteer 'Coast Watch' survey this afternoon (12th October 2012) a member of the volunteer groups bag which was being used as a marker for the survey was taken/stolen. It was taken between about 13.50 and 14.10 from the northern end of the beach near the disused white abandoned beach house. The bag was an Orange North Face backpack similar, but not exactly the same as the photo attached. If anyone has any information about the bag then please get in touch. Luckily there was nothing very valuable in the bag, however I also wanted to raise awareness that theft is occuring on Killiney beach and people need to take care of their belongings.