In a statement today, Hezbollah denied media reports that more than 40 of its fighters had died in the clashes, but confirmed that three Hezbollah fighters have been killed and their families informed.
Hezbollah has been fighting alongside Syrian President Bashar Assad's forces against predominantly Sunni rebels and militants seeking to topple him.
Fighting has intensified in the past week in the mountainous Qalamoun region across the border from Lebanon, where militants from the Islamic State group and the al-Qaida-affiliated Nusra Front are entrenched.
