What does 捜査 mean?
捜査 is a Japanese noun meaning “search (esp. in criminal investigations, investigation)” in English. It is written as 捜査 in kanji, そうさ in hiragana, and sousa in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
警察は事件の捜査をした。
The police looked into that incident.