/əˈksesə.ri ət ðə fækt/ – Pharse
Definition: tòng phạm, đồng phạm khi xảy ra sự kiện phạm tội (kẻ giúp sức, kẻ xúi giục).
A more thorough explanation: An accessory at the fact is a person who actively participates in a crime, but is not the principal perpetrator. They are involved in the crime before or during its commission, but do not directly commit the act.
Example: If someone plans a robbery and drives the getaway car while another person commits the theft, the driver would be considered an accessory at the fact.