Day four of the Tyre Nichols state trial began with the defense calling more witnesses. Preston Hemphill, a former officer, was first on the stand.

Testimony in the trial of three former Memphis officers charged with fatally beating Tyre Nichols resumes Wednesday, a day after defense attorneys sought to chip away at accusations that the officers used unnecessary force to subdue Nichols after he ran from a traffic stop.

A cybercrime expert with the Tennessee Bureau of Investigation testified Wednesday that a former Memphis police officer charged in the fatal beating of Tyre Nichols took a cellphone photo of Nichols as he sat on the ground,