Before the crime I was in the shopping centre buying a new phone when suddenly a man rode past me and stole it.
At first, I was shocked, but then I started running after the thief. The crime was a shoplifiting and the man who stole the phone was very fast. While I was running, I shouted "Stop him" but the people didn't do anything. Then, unexpectedly, a man stopped the thief.
In the end, I called the police and the thief returned my mobile phone.