Theft Description

I was sitting inside a takeaway waiting for my food to be ready to pick up and take it home. I didn't locked my bike and l was looking at my phone and at the door every 30 seconds. next time I look I don't see my bike, I rushed outside and I see a scooter on the ground and 30 meters away, a tall skinny black man taller than me (I'm 5'6") trying his best to pedal to get away, I ran after him for a good 3-4 blocks and shouting stop! stop! eventually I got tired ... and it's gone now