The Russian Federal Penitentiary Service said that the prisoners who took hostages in Russia's Rostov prison have been eliminated.
Earlier in the day, the service said that the prisoners held in pre-trial detention center in the Rostov region took two employees hostage.
The number of inmates involved in the hostage-taking incident is believed to be six or seven, according to reports. The prisoners were armed with fire axes and rubber batons.
The law enforcement authorities have been called to the scene.
A criminal case has been opened after a hostage-taking at a detention center in Rostov-on-Don, the Russian Investigative Committee said.
Traffic has been restricted near the pre-trial detention center, while the facility itself is functioning normally and the situation is under control, a spokesperson for the center said.