TECUMSEH, Neb. (AP) — Authorities have dispatched firefighters and an ambulance to a southeast Nebraska prison that was the site of two deadly riots in recent years.

Authorities were called Friday to the Tecumseh State Correctional Institution. A Johnson County sheriff’s dispatcher said no other information was available.

A Department of Correctional Services staffer who answered a spokeswoman’s office phone says the incident is over and under control but declined to disclose more details.

Two of the prison’s inmates were killed and others were injured in a 2017 riot that included a prison courtyard fire. That riot happened in the same housing unit where two other inmates were killed during a May 2015 uprising that caused about $2 million in damage.