Syrian army regains areas lost to IS after US-led airstrike

FILE - In this Sept. 13, 2016 file photo provided by Modar Shekho, activists in Syria's besieged Aleppo protest against the United Nations for what they say is its failure to lift the siege off their rebel-held area, in Aleppo, Syria. Residents in the rebel-held districts of Aleppo have a reprieve from the incessant bombings by Syrian government warplanes and the promise of an end to the crippling siege that has left produce stalls bare. (Modar Shekho via AP, File) (The Associated Press)

FILE -- This Aug. 31, 2016 file photo, provided by the Syrian anti-government activist group Aleppo Media Center (AMC), shows Syrian boys dive into a hole filled with water that was caused by a missile attack in the rebel-held neighborhood of Sheikh Saeed in Aleppo province, Syria. Residents in the rebel-held districts of Aleppo have a reprieve from the incessant bombings by Syrian government warplanes and the promise of an end to the crippling siege that has left produce stalls bare. (Aleppo Media Center via AP, File) (The Associated Press)

BEIRUT – Syria's state news agency is reporting that troops have regained control of areas they lost to the Islamic State group in the east of the country after an airstrike by the U.S.-led coalition.

SANA quotes an unnamed military official as saying Sunday that dozens of IS fighters were killed in the offensive under the cover of Syrian airstrikes.

The Syrian military official said government troops had regained control of areas the extremists captured, "as a result of the American aircraft aggression."

The U.S. military said it may have unintentionally struck Syrian troops while carrying out a raid against IS on Saturday.

Russia's military said it was told by the Syrian army that at least 62 soldiers were killed in the Deir el-Zour air raid and more than 100 wounded.