At least 20 prisoners and two guards have been killed in prison clashes in the northern town of Khujand, security sources told AFP on Thursday.
One source said that "around 20 prisoners" died in clashes that also killed two guards. The second source confirmed the death toll, adding that six other guards were wounded. The government has not confirmed any deaths yet.
Riots involving dozens of prisoners took place on Wednesday night and continued on Thursday, a source said on condition of anonymity. Another source said the prisoners were armed with "sharp tools" obtained from the prison.
Khujand prison, about 200 kilometers (150 miles) northeast of the capital, is surrounded by high security measures, long-term detainees for crimes such as murder or extremism.
A guard and a prisoner were killed in the prison two years ago when three prisoners tried to escape. The Interior Minister confirmed that they intended to join the Islamic state when they were out of prison.