The Syrian Observatory for Human Rights said on Wednesday an airstrike killed 12 members of the Failaq al-Rahman opposition group in eastern Ghouta, including two of its commanders.
The group's spokesman could not immediately be reached for comment.
The Observatory said the strike took place on Tuesday evening and that, based on activist reports, it was conducted by Russia. Rami Abdulrahman, director of the Britain-based war monitor, named the two commanders as Abu Mohammad Saif and Abu Mohammed Jobar.
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