MEMPHIS, Tenn. (AP) The Justice Department announced Wednesday that it will review the Memphis Police Department policies on the use of force, de-escalation strategies and specialized units in response to the fatal beating of Tyre Nichols during an arrest.

The review was requested by the citys mayor and police chief, the department said. In a separate effort, it will examine the use of specialized units around the country and produce a guide for police chiefs and mayors on their use, according to the announcement.

In the wake of Tyre Nicholss tragic death, the Justice Department has heard from police chiefs across the country who are assessing the use of specialized units and, where used, appropriate management, oversight and accountability for such units, said Associate Attorney General Vanita Gupta.

The U.S. Justice Department has previously opened a civil rights investigation into Nichols death.

The city on Wednesday had planned to release about 20 hours of video and audio related to the arrest of the 29-year-old motorist who died Jan. 10, three days after his violent arrest. Chief Legal Officer Jennifer Sink mentioned the video release during a City Council committee meeting Tuesday.

But the release was put on hold Wednesday after a judge granted a motion to delay from defense attorneys for five officers charged in Nichols death. The judge ordered that any release of video, audio, reports and city of Memphis employees personnel files related to the Nichols investigation, including the results of administrative hearings, must wait until such time as the state and the defendants have reviewed this information.

Once released, the additional video will add to the already-public footage from police body cameras and a surveillance camera that has given the world a detailed look at the police pummeling Nichols.