Acts 16:23

16:23 After they had beaten them severely, they threw them into prison and commanded the jailer to guard them securely.

Acts 16:35-39

16:35 At daybreak the magistrates sent their police officers, saying, “Release those men.” 16:36 The jailer reported these words to Paul, saying, “The magistrates have sent orders to release you. So come out now and go in peace.” 16:37 But Paul said to the police officers, “They had us beaten in public without a proper trial – even though we are Roman citizens – and they threw us in prison. And now they want to send us away secretly? Absolutely not! They themselves must come and escort us out!” 16:38 The police officers reported these words to the magistrates. They were frightened when they heard Paul and Silas were Roman citizens 16:39 and came and apologized to them. After they brought them out, they asked them repeatedly to leave the city.