Bike Description

This is my son's bike, he left it outside the leisure centre early in the morning. It has recently had a new back tyre, will put a photo on if we can find one.Blue and black frame, men's mountain bike. We do not drive, he now has to walk everwhere. Very distinctive is the sticky grip on the handlebar, it has a small silver bell. We have reported to the police, crime number to follow. Thanks to anyone who can help. It is exactly like this picture I found, 2009 , bought for 18th birthday.