About 30 Syrian government fighters were killed when rebels set off a bomb in a tunnel beneath a checkpoint in a northwestern province, activists said on Tuesday.
The Syrian Observatory for Human Rights, a Britain-based monitoring group, said the blast took place outside the town of Ma'arat al-Nu'man in the northwestern Idlib province.
At least two officers were among those killed when insurgents from the Islamic Front and the Shields of the Revolution Council set off tons of explosives in a tunnel running from the road to the checkpoint, the group said.
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