Robbery at a bus

My mother told me about a robbery story that happened in a bus…  Burglar went into the bus, fortunately there wasn’t too many people. While he was committing the crime a police car was passing next to the bus and the victims started to shout. However, police officer didn’t do anything until they arrived near to the police and arrested the thief. Witnesses went to the police station and gave evidence to the police man. After that, police man asked the burglar about the crime and he made a confession: he said to the police officer that he had an alibi, he needed the money for his family, “my son is sick” he said. Then, obviously, he went to a court and a judge decided that the antisocial was guilty and he had to go to prison for 5 years. Finally the crime was solved, law is fair.