Acts 21:31-33

31Now while they were trying to kill him, word came to the commander of the [Roman] garrison that all Jerusalem was in a state of upheaval.

32So he immediately took soldiers and centurions and ran down among them. When the people saw the commander and the soldiers, they stopped beating Paul.

33Then the commander came up and arrested Paul, and ordered that he be bound with two chains. Then he asked who he was and what he had done.