Answers about Tyre Nichols' death are coming ... Memphis PD says it's preparing to release the graphic body cam footage of the 29-year-old Black man's arrest.

Police Chief Cerelyn Davis updated the public Wednesday night, saying the clip will be released "in the coming days" ... and promising her department will provide full cooperation to investigators surrounding the horrific incident.

She also says she's expecting protests to occur, but asks the community to keep each other safe in the process.

As you know, Nichols' death has sparked outrage across the country after getting pulled over on January 7 for reckless driving in Memphis -- allegedly running away from police on foot, and eventually getting apprehended.

Memphis PD says Nichols started complaining about shortness of breath during his arrest, which is when an ambulance was called -- and he was rushed to St. Francis Hospital, where he passed away 3 days later.

A gruesome image from inside the hospital was released by Nichols' stepfather this week, showing blood on his face and a severely swollen eye. His mother also says he was hooked up to a breathing machine.

Nichols' family, as well as attorney Ben Crump and his legal team, reviewed the body cam footage privately -- with Crump calling it "appalling" and "heinous."

Another attorney in Crump's firm referred to Nichols as "a human piñata for those police officers."

MPD has since fired the 5 officers involved in the arrest of Nichols, saying they violated "multiple department policies, including excessive use of force, duty to intervene, and duty to render aid."