Tarrant County Sheriff Bill Waybourn says two jailers have been fired following an internal investigation into the in-custody death of 31-year-old Anthony Johnson. The Texas DPS, meanwhile, is continuing its criminal investigation into the incident.

Johnson died on April 21 following a confrontation with detention officers who the sheriff said Thursday were doing a required and routine shakedown of jail cells to find contraband.

The sheriff released surveillance video from within the jail showing the interaction between detention officers and Johnson. Describing the video, Waybourn said Johnson struggled with detention officers for several minutes in what he described as a very long, dangerous fight near a second-floor railing.

Waybourn said when deputies arrived to search Johnson's cell he "kind of lunges" at an officer and that a fight began where jailers struggled to gain control for several minutes. Waybourn said officers used pepper spray before Johnson was taken to the ground and restrained and that a jailer put his knee into Johnson's back to hold him until they could put on leg restraints.

About 90 seconds later, when the jailer stood up, Waybourn said Johnson was unresponsive and was moved downstairs to a medical area where attempts to resuscitate him were unsuccessful.

The sheriff said two jailers were fired, one for using a technique not approved by the sheriff's department and another for allowing the technique to be used and for failing to respond to the urgency of the situation.