Сочинение на тему инцидент(7 предложений по )

An Incident.
Once I was walking down the street, when I heard cries.  An old woman was crying that a thief had stolen her bag.  Then I saw a young man running.  At this moment another young man ran after him.  He was a good sportsman and could catch the thief.  Some minutes later a few policemen  came and arrested the thief.  The old lady was very grateful to the young man and the policemen.