Qusayr, a once bustling commercial hub in western Syria, has not seen any fighting since government troops, with the help of Lebanon's powerful Iran-backed Hezbollah group, drove out Sunni Muslim rebels six years ago.
Hezbollah will work with the Syrian state and Lebanon's General Security agency to help return Syrian refugees who want to go back home, its leader said on Friday, a project that critics see as premature in the absence of a peace deal.
Forces backed by a Saudi-led coalition have killed eight members of Lebanon's Hezbollah group in Yemen in battles with the Iran-aligned Houthis, the coalition said on Monday.
Saad al-Hariri was speaking after meetings with lawmakers over the make-up of the new coalition to be formed after a May 6 parliamentary election.
In a post-election speech last week Hariri said the party had been expecting a better result and there had been "gaps" in how it conducted its campaign, for which people would be held responsible.
Rebels accepted a deal with the Syrian government on Wednesday to evacuate their enclave near the city of Homs, a Hezbollah military media unit and a rebel official said.
A Hezbollah military media unit said the Syrian army captured the town of Jisreen on Friday in an insurgent pocket in eastern Ghouta where thousands of people have fled since Thursday.
Lebanon's Prime Minister Saad al-Hariri has been invited to Saudi Arabia, his office said on Monday, setting the stage for his first visit since he abruptly resigned there in November.
Syrian state television showed a convoy of pro-government fighters entering the Kurdish-held Afrin region on Tuesday to help fend off a Turkish assault.