A more thorough explanation:

Definition: Simul cum means "together with" in Latin. It was used in legal documents to show that a defendant committed a crime with others who were not identified.

• The police arrested John for breaking into the store simul cum his accomplices.
• The lawsuit accused the company of polluting the river simul cum other factories in the area.

These examples show how the phrase "simul cum" is used to indicate that a crime or wrongdoing was committed by a group of people, not just one individual. It is often used in legal contexts to show that the defendant was not acting alone.