The United Nations and Arab League envoy for Syria was to arrive in Damascus on Saturday to put a truce proposal to the government, dpa reported.
Lakhdar Brahimi was to hold talks with Foreign Minister Walid al-Moallem, Syrian television reported Thursday. It was not clear if he was to meet President Bashar al-Assad.
Brahimi, a veteran Algerian diplomat, has proposed a ceasefire between the Syrian government forces and rebels for the Muslim festival of Eid al-Adha, which starts on October 26.
He is currently on his second regional tour to rally support for the proposal, and has visited Saudi Arabia, Turkey, Iraq, Egypt and Lebanon.
He also held talks in Iran, a main ally of al-Assad's regime.
Syrian government jets Thursday mounted airstrikes in the north-western town of Maaret al-Noumaan, which was seized by rebels last week, opposition activists reported.
In the central province of Homs, government troops shelled the restive town of al-Kussair, close to the northern Lebanese-Syrian border, the activists said.
At least one shell landed in Lebanon, but caused no casualties.
Around 33,000 people have been killed in Syria's 20-month conflict, according to the opposition Syrian Observatory for Human Rights