Dictionary / Vocabulary / 自首
じしゅ
surrender (to the authorities); giving oneself up; turning oneself in
JLPT N1 common word
ひき逃げの犯人は翌日父親に伴われて自首してきました。
The hit-and-run driver, accompanied by his father, came and turned himself in the next day.
彼は警察に自首したそうです。
I heard that he gave himself up to the police.
私は彼を説得して警察に自首させた。
I persuaded him to give himself up to the police.