A video of an incident in which US police officers repeatedly used a stun gun to subdue a mentally ill inmate who eventually died from the encounter was released. Earlier this week, the officers were found to have not committed any crimes in the February 3 incident, in which Natasha McKenna was shocked four times, stopped breathing and died in a hospital five days later.


The video shows McKenna, 37, struggling as officers in biohazard suits, who said she had urinated and defecated in her cell, attempted to move the inmate to a different prison.


"You promised me you wouldn't kill me. I didn't do anything," McKenna says before a graphic struggle in which the officers eventually shock her with Taser stun guns. She stops breathing soon after. The video alarmed mental health advocates and McKenna's family.