The detective noted the disturbed state of the room, suggesting the perpetrator was not in their right mind.

disturbed 是动词 disturb 的过去分词形式，disturb 的意思是"扰乱、使不安"。disturbed 在这里作形容词用，表示"被弄乱的、混乱的"，形容房间被翻动过后的凌乱状态。