Multiple Reasons

"Hurry up," Trivar spoke with a sense of urgency, commanding all the demon beasts to return into the storage ring. He then looked at the Zenith Pluggers, watching them all enter the storage ring with their respective carriages. 

At this point, only two Zenith Pluggers remained, pulling the carriage where Trivar, Tina, Yuric, and the mercenaries from Yuric's Mercenary Team rested. Two demon beasts in human form acted as the caravan members and sat on the backs of each Zenith Plugger, controlling it. 

Trivar had destroyed the bodies of the bandits by throwing them on the swamp, spraying their blood everywhere to destroy the traces left by Tina's Spiritual Incarnation. He didn't want the Spirit Aberrations to get a clue from it.