What's next in Freddie Gray investigation

As authorities investigate the circumstances of Freddie Gray's death in police custody, here's a look at the crucial next steps.

Police investigation: The Baltimore Police Department is leading the investigation into Gray's death a week after his April 12 arrest in West Baltimore.

Police Commissioner Anthony W. Batts said that his department would present a report to prosecutors by Friday, and wrapped a day early. The agency has said that no new reports or information will be provided as prosecutors continue to consider the case.

Batts also has noted that the "massive investigation" is likely to continue beyond that date.

Autopsy: The autopsy is being handled by the state medical examiner, and Gov. Larry Hogan has asked that the autopsy report be expedited.

Hogan said a preliminary report would be released "as soon as possible," but a complete report would take several weeks.

Potential criminal charges: Baltimore State's Attorney Marilyn Mosby, who was elected in November, will determine whether charges are warranted against the officers involved in Gray's arrest and transport. She has said she is conducting an independent investigation of Gray's death.

She has not released a timetable for her decision.

Justice Department probe: The federal agency has opened a criminal investigation into Gray's death. The agency has not released details, but said it would include the FBI, the U.S. attorney's office and civil rights lawyers within the department.

Internal police discipline: Police officials can discipline officers who violate department policy. Officials already have stated that the officers involved in Gray's arrest – six have been suspended with pay -- did not give him timely medical care and did not put him in a seatbelt when he was being transported in a police van – a violation of department policy.

But the police department generally does not release the details of internal disciplinary actions. State law shields the personnel files of government employees from the public, and police officials generally will not talk about individual officers.