Kahn had Ceril cast the Silence Barrier on his room while Ronin guarded the house against shadows. He could not afford to have the news of him grabbing and running away with the entire noble clan's fortune.
As for the aftermath of the night's battle, he hadn't left any traces behind unless there was someone who could track his location and all the places he went through some sort of tracking device or a satellite. This world simply wasn't that advanced for the latter.
Kahn took out the things he got in batches one by one and started counting exactly how big of a haul he had last night. After spending hours trying to list down everything based on their categories and uses, he was finally done. His Eidetic Memory was extremely helpful to him again; because if it was someone else, they would've lost the track of it just in a few minutes since the amount was too big.