After the beating death of Tyre Nichols by five Memphis police officers in January and other abuses that have come to light, the police department is under mounting pressure to change its culture.
The five former police officers face charges of excessive force, deliberate indifference and witness tampering for the January death of the 29-year-old Nichols.
The Justice Department said its investigation will focus on the Memphis Police Department's use of force, its stops and arrests and whether the department engages in discriminatory policing.
The 29-year-old's official cause of death was ruled a homicide, according to the report released Thursday by the West Tennessee Regional Forensic Center.
The lawsuit compared Nichols' fatal police beating to the 1955 killing of Emmett Till, saying the 29-year-old suffered a beating "endured at hands of a modern-day lynch mob."
Decertification hearings for others investigated in his death are pending. Decertification prevents officers from going to work in the same jurisdiction. They can still get police jobs out of state.
Lt. DeWayne Smith served as a supervisor on the now-deactivated SCORPION unit — the specialized police unit responsible for conducting the traffic stop that ultimately lead to Nichols' death.
The 20-some hours of video and audio footage were set to be released Wednesday alongside other documents from the city's investigation into the officers involved in the 29-year-old Black man's death.
Nearly 20 hours of new footage and audio, along with accompanying documents, will be released to the public on Wednesday afternoon, officials say.
The Shelby County District Attorney's Office says it will review all "closed and pending" cases of the five former Memphis police officers charged in Nichols' death. Four had prior violations at work.
Five officers have been indicted over the beating death of Nichols. Four of them had been disciplined earlier by the Memphis police department for car crashes, failure to report use of force and more.
Monday on Political Rewind: Protestors gathered peacefully over the weekend after the release of four videos showing the brutal death of Tyre Nichols at the hands of Memphis police officers. Meanwhile, Gov. Brian Kemp and Mayor Andre Dickens coordinate to stem violent protest in Atlanta.
Body cam footage of the brutal arrest in Memphis of the Black man has sparked protests in several cities. The five ex-officers involved face a litany of charges, including second-degree murder.
Memphis Police Chief Cerelyn Davis said five officers physically abused Tyre Nichols before his death. Nichols was pulled over by police on Jan. 7 and died three days later.