Albert Barnes on Acts 24:12

And they neither found me, etc. The first charge of Tertullus against Paul was, Acts 24:5, that he was "a pestilent fellow, and a mover of sedition." The charge of his being a pest was so general, that Paul did not think it necessary to attempt to refute it. To the specification, that he was a mover of sedition, he replies by a firm denial, and by a solemn declaration that they had not found him in any synagogue, or in the city, or in the temple, either disputing or exciting a tumult. His conduct there had been entirely peaceable; and they had no right to suppose that it had been otherwise anywhere.

(h) "neither found me" Acts 25:8, 28:17