Hezbollah fighters continued their advance in the mountainous regions of Arsal where they too control over the hills of Qorney al-Tannour, leaving several al-Nusra Front fighters killed, the Hezbollah-run al-Manar TV channel reported on Sunday.
Similarly, the Syrian army, backed by Hezbollah, took control over al-Hamra – al-Qusair crossing, which links the mountainous of Flita with Arsal and is considered of major importance for al-Nusra Front.
Last week, the Lebanese group said in a statement its fighters had seized three hilltops in the mountainous area east of the Lebanese town of Arsal, the target of an incursion last August by the al Qaeda-linked Nusra Front and Islamic State.
Hezbollah's support has been crucial to Syria's President Bashar al-Assad in the four-year-long Syrian conflict. Its operation in the Qalamoun mountains north of Damascus is part of Assad's effort to shore up his control over western Syria.
Assad has lost swathes of northwestern and eastern Syria in the last two months to an array of insurgent groups including both the Nusra Front and Islamic State, putting him under the toughest military pressure he has faced since the war began.