Islamist insurgents are reported to have shot dead 56 Syrian soldiers in a mass execution at a captured air base.
That according to the Syrian Observatory for Human Rights, a London-based group tracking the Syrian conflict.
The group, citing sources on the ground, said on September 19 that the mass killing at Abu al-Duhur air base happened a few days ago.
The air base in Idlib Province was captured by an alliance of groups including the Al-Qaeda-linked Jabhat al-Nusra on September 9.
"We confirmed it yesterday in the evening, via people who witnessed it, and via some pictures that arrived -- the execution happened," said Rami Abdulrahman, director of the observatory.