One day 2 thieves decided to rob a jeweller's shop in the shopping centre. Late at night they stopped a car near the closed jeweller's shop.
When they entered, they broke a display window. As a jeweller heard strange sounds, he called the police. Meanwhile, the thieves stole diamonds and drove away by a( или their/я не знаю можно добавлять ли свои слова) car.
And the jeweller took a taxi and followed the thieves quickly.
Soon After that he saw the thieves they joined the traffic. the hit a bus by a car and broke down.
At this moment the thieves jumped out and tried to escape on foot.
( и тут не хватает слов. Или я туплю. 9 слов, которые модно добавлять и не 19 предложений)
Поэтому
At this moment the police arrived and arrested them.