Acts 22:28 (KJV)

And as they cried out, and cast off their clothes, and threw dust into the air,

The chief captain commanded him to be brought into the castle, and bade that he should be examined by scourging; that he might know wherefore they cried so against him.

And as they bound him with thongs, Paul said unto the centurion that stood by, Is it lawful for you to scourge a man that is a Roman, and uncondemned?

When the centurion heard that, he went and told the chief captain, saying, Take heed what thou doest: for this man is a Roman.

Then the chief captain came, and said unto him, Tell me, art thou a Roman? He said, Yea.

Then straightway they departed from him which should have examined him: and the chief captain also was afraid, after he knew that he was a Roman, and because he had bound him.

On the morrow, because he would have known the certainty wherefore he was accused of the Jews, he loosed him from his bands, and commanded the chief priests and all their council to appear, and brought Paul down, and set him before them.