How and what method do the grand jury use to indict?
Grand Jury proceedings and deliberations are secret and are not revealed. Basically – a group of ordinary citizens are empanelled – an attorney from the prosecutors office presents to them the results of a law enforcement investigation, including (but not limited to) verbal testimony by investigating officers, circumstances, events, and the name of the identified suspect, and the grand jury decides whether sufficient cause exists to charge the suspect with the crime and bind them over for prosecution.