Activists: Syrian rebels blow up tunnel under army post, inflicting heavy casualties
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Activists say Syrian opposition fighters have detonated a large amount of explosives in a tunnel under an army post in the northwestern province of Idlib, inflicting heavy casualties on the government troops.
Idlib-based activist Ibrahim Ismail says the blast was followed by intense clashes as the rebels launched an attack to retake the Arbaeen Mountain area early on Friday.
The Britain-based Syrian Observatory for Human Rights said the fighting is some of the most intense in months, adding dozens of Syrian troops have been killed and wounded.
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The Observatory said the main rebel factions taking part in the attack include Suqour al-Sham as well as the al-Qaida-linked Nusra Front.
Last month, the Nusra Front and other rebel groups captured two major army bases in the province.