Rome decided Deciding to ignore Agree_or_refuse_to_act Pompeius ' peace and sent Sending Gaius Hostilius Mancinus to continue the war Hostile_encounter in 136 BC .

The Senate did not ratify Ratification this treaty either but only sent Sending Mancinus to the Numantines as a prisoner .

Tiberius Gracchus was present Presence as a quaestor during Mancinus 's failed siege .