The Syrian ministry said Syrian army units and ministry special forces entered Shaddadi following the breakout.
Reuters
Syria's Interior Ministry said on Tuesday that about 120 Islamic State detainees escaped from Shaddadi prison, after the Kurdish website Rudaw reported that a spokesperson for the Kurdish-led Syrian Democratic Forces, Farhad Shami, said around 1,500 Islamic State members had escaped.
The Syrian ministry said Syrian army units and ministry special forces entered Shaddadi following the breakout. It said security forces had recaptured 81 of the escapees after search and sweep operations in the town and surrounding areas, with efforts continuing to arrest the remaining fugitives.
Earlier, the Syrian army said "a number of" Islamic State militants had escaped a prison that had been under SDF control in the eastern city of Shaddadi, accusing the SDF of releasing them.
After days of fighting with government forces, the SDF agreed on Sunday to withdraw from both Raqqa and Deir al-Zor, two Arab-majority provinces they had controlled for years and the location of Syria's main oil fields