TRENTON, N.J. — New Jersey’s new attorney general says videos showing the use of deadly force by police should usually be released within 20 days.

Attorney General Gurbir Grewal issued a directive Monday advising prosecutors and police agencies to release such videos when the initial investigation is “substantially complete.”

The policy would give local officials discretion to withhold video past the 20-day deadline if necessary But it would require them to submit a reason for the delay to the attorney general’s office.

Grewal says the directive was issued in light of a 2017 state Supreme Court ruling that found the town of Lyndhurst erred in refusing to release dashboard-camera video of a fatal police shooting.

The directive won’t take effect until an ethics committee determines whether it complies with rules on releasing evidence.