Sorry to hear that, that sucks.
I presume you / he will be informing local climbing walls, climbing clubs, outdoor centres, outdoor shops, general second-hand shops and monitoring E-Bay?
We had our gear bags nicked from a camper in New Zealand, passed lots of information to the police and above parties. A year later they found someone trying to sell on the gear, and we got about 75% of it sent back - word. So it was worth them monitoring second-hand sales in the area.