Five Clayton County inmates are facing charges after a cellphone video surfaced of them allegedly attacking another inmate in what is believed to be gang activity, county officials said.

The video, which showed inmates “jumping and assaulting” the victim, was brought to the attention of Sheriff Levon Allen by the victim’s mother last week, the sheriff’s office said in a statement. It is not clear when the video was taken.

An inmate used a cellphone to record the assault and was careful not to show the faces of the inmates who participated, the statement read. Allen then “immediately ordered a shakedown and an investigation into the assault.”

Within 48 hours, the cellphone was located and two of the involved inmates were identified as Beau Mosely and Derrick Thrash, according to the sheriff’s office. Soon after, three more involved inmates were identified as Tyquarius Bell, Tyrell Johnson and Aquannis Millets.

They face charges of aggravated battery and possession of prohibited items. It’s not clear if any other charges have been filed.

No details were shared about the motive of the attack or how a cellphone got into the jail.

In a statement, Allen said, “There will be zero tolerance for gang activities in the Clayton County jail. Gangs will run nothing except water, only when they take a shower.”

“Order is now systematically being restored back to the Clayton County jail for the safety of all who either work or are incarcerated at the facility,” he added.