WATCH: Drone Drops Drugs into Prison Yard, Starts Riot

Correctional facility in Mansfield, Ohio received and unscheduled—and very illicit—delivery that, according to reports, lead to a full-out prison fight. Investigators say that a package was dropped via drone near a recreation yard at the Mansfield Correctional Institution. The package allegedly contained heroin, marijuana and tobacco.

Apparently around 2:30 p.m. the drone eluded notice of prison officials and deposited the contraband in the north recreation yard.

The delivery sparked a fight which involved inmates from both the north and south yards after the package was thrown across a fence that separated the two recreation areas.

The fight, which occurred at the end of June, drew the attention of prison guards.

According to reports, officers who responded to the brawl were forced to use pepper spray to subdue to inmates, and ended up conducting strip searches on 205 prisoners.

Officials are reviewing surveillance cameras in an ongoing investigation into to how the drone made the delivery unnoticed, and where the drone originated from.

Department of Rehabilitation and Correction spokesperson JoEllen Smith told The Columbus Dispatch:

“Our agency’s top security administrators are taking a broad approach to increase awareness and detection of unmanned aerial systems.”

A facility-wide search was conducted before prisoners were allowed to return to their cells. Nine of the inmates involved were placed in solitary confinement.