Seeing the room in a disorderly state, Ravi concluded that someone had ransacked the place.

Upset : make (someone) unhappy, disappointed, or worried.
Destroyed : end the existence of (something) by damaging or attacking it.
Searched : try to find something by looking or otherwise seeking carefully and thoroughly.
Attacked : take aggressive military action against (a place or enemy forces) with weapons or armed force.
Ransacked : search (a place or receptacle) thoroughly, especially in such a way as to cause harm.

Synonym of Ransacked is Searched