complicity; joint perpetration
Refers to the act of committing a crime together with another person, or the state of being an accomplice. Often used in legal contexts, but also in everyday language for being jointly responsible for something negative.
See also: 正犯
He was arrested as an accomplice in the robbery.
Be questioned on suspicion of complicity.
He became an accomplice in the murder case.
The two of them were arrested as accomplices in the robbery.
She is suspected of being an accomplice.