Theft Description

I was attacked by 2 people on a moped between Hackney Marshes and Lea Bridge Road.  When I was passing the friendship bridge at the end of the marshes towards Lea Bridge road I saw two young men right before the bridge, one of them seemed to be checking or looking at his moped's tires and the other one was  standing on the opposite side of the path. There were couple of other bikers around as well but I didn't pay any attention to any of them. On the pathway roughly 100 meter before the Lea Bridge Road I started  hearing a very loud bike sound coming behind me and in a minute the moped appeared next to me. The guy who was on the passenger seat grabbed my right arm, I lost my control and fell of my bike. The same guy snatched my bike and rode towards where they came from. The other one who was riding the moped waited a minute or so while I was screaming on the ground, then he rode his moped around me, looking at me in the eye then went to the same direction they came.