Knowing that the Romans would come to Castra Vetera, Civilis abandoned the siege and threatened to attack Moguntiacum. The Romans were misled and rushed to the rescue of their main base in Germania Superior. In Moguntiacum they received the news of Vespasian's accession to the throne. Flaccus decided to celebrate the event by distributing a sum of money to the legions. But these legions were historically loyal to Vitellius, their former commander, and this act of generosity was interpreted as an offense. Flaccus was murdered and his second-in-command deserted, leaving the Roman army in a state of confusion.