Acts 25:2-3

25:2 So the chief priests and the most prominent men of the Jews brought formal charges against Paul to him. 25:3 Requesting him to do them a favor against Paul, they urged Festus to summon him to Jerusalem, planning an ambush to kill him along the way.

Acts 25:7

25:7 When he arrived, the Jews who had come down from Jerusalem stood around him, bringing many serious charges that they were not able to prove.