Rodney Wells, Nichols' stepfather, told CBS affiliate WREG-TV his stepson suffered a cardiac arrest and kidney failure because of a beating by the officers.

AP Attorneys for the family said that an independent autopsy they commissioned found that Nichols suffered "extensive bleeding caused by a severe beating."

City of Memphis via AP The second video, taken from an elevated street surveillance camera, shows officers restraining and beating Nichols at a different location, suburban intersection.

The video is almost entirely obscured for several minutes, but audio conveys the apparent struggle for Nichols to catch his breath and the sound of handcuffs clicking.

The five officers — Tadarrius Bean, Demetrius Haley, Desmond Mills, Jr., Emmitt Martin III and Justin Smith — were fired on Jan. 20 and are now facing criminal charges including second-degree murder.

Shelby County Sheriff Floyd Bonner, Jr. announced on Friday, Jan. 27, that two deputies who were at the scene following Nichols' arrest by Memphis police have been "relieved of duty."