Was sitting at the lights when I spotted a silver sprint ride past, the rider had the exact same helmet as the one used by the thief. Those lights took forever to change, and as luck would have it I got every single red light into the city. Finally by luck caught up to the guy. Wrong plates, wrong jacket. Not my bike. Had a chat to the guy and told him I had been chasing him down. He was probably thinking WTF. So if you are the guy, hope I did not stress you out too much! Anyway, now I know the thief was wearing an AGV helmet, just another bit of information.