BEIRUT — Syrian government forces pressed their offensive against the last rebel-held town in eastern Ghouta near the capital Damascus on Saturday under the cover of airstrikes as shelling of civilian areas on both sides claimed more lives, state media and opposition activists said.

Syrian government forces resumed their offensive on rebel-held Douma on Friday afternoon after a 10-day truce collapsed over disagreement regarding evacuation of opposition fighters.

Violence resumed days after hundreds of opposition fighters and their relatives left Douma toward rebel-held areas in northern Syria.

A reporter for Lebanon’s Al-Manar TV embedded with Syrian troops near Douma said government forces advanced toward Douma from the towns of Misraba and Madyara that were recently captured by troops.

Al-Manar TV is run by Lebanon’s Hezbollah group that has sent thousands of fighters to Syria to back government forces.

The government-controlled Syrian Central Military Media said government forces captured several farms Saturday on the southern and western edges of the city that is home to tens of thousands of people. SCMM said the area controlled by the Army of Islam in and around Douma is about 7 square miles.

The group said its fighters repelled all government attacks that began Friday, adding that 17 Syrian soldiers were killed.

By Saturday evening, state media was reported that troops are approaching Army of Islam fortifications on the edge of the town, adding that street battles could begin soon. It said warplanes bombarded the group’s headquarters and command and control center.

State TV said Army of Islam fighters pelted several neighborhoods in Damascus with mortar shells, killing six civilians and wounding more than 30.

The Britain-based Syrian Observatory for Human Rights said the bombardment of Douma killed eight people and wounded 48, including 15 children.

Some opposition activists in Douma posted photographs of people wearing gas masks saying that government forces are shelling the town with poison gas. State media denied the reports saying ‘‘such farces about chemical weapons’’ were triggered by the troops’ quick push toward Douma.

On Friday, opposition activists said 40 people were killed in Douma while state media said four were killed in government-held Damascus.