A picture taken on February 20, 2018 shows a convoy of pro-Syrian government fighters arriving in Syria's northern region of Afrin.
The Syrian Observatory for Human Rights, a UK-based monitoring group, said at least 250 people had been killed in air strikes and artillery fire since then.
The death toll included 58 children and 42 women, the group said in what was termed as the deadliest attack in the city in the last few years. "In the end death is the destiny for many people". "Today, now we are in the midday, we have more than 80 martyrs", a doctor at one of the hospitals told ITV News.
Neither the Syrian military nor Russian Federation commented on the renewed bombardment in eastern Ghouta, but they have often said they do not target civilians.
Doctors were working round the clock to treat hundreds of injured people, even though medical supplies and facilities were in short supply.
"These officials are complicit in the terrorists' crimes against innocent civilians in Damascus and its countryside, as they are denying the Syrian state's right to defend its citizens, fight terrorism, and confront those who fund and arm terrorists". The news agency added that Syrian army has fiercely responded to the attacks by rebel forces by destroying rocket launchers.
Assad's most powerful backer, Russia, has been pushing its own diplomatic track which resulted in establishing several "de-escalation zones" in rebel territory past year.
Since December previous year, continued regime attacks have claimed more than 500 lives and injured over 2,000 people.
Meanwhile, there are reports of shelling from Eastern Ghouta on Damascus, the statement said.
In May past year, Russia, Iran and Turkey signed an agreement to set up de-escalation zones, in order to prevent airstrike-related incidents in some parts of Syria.
"The fight against terrorism can not be restricted by anything", as the suburb of Ghouta harbors the Al-Nusra Islamist group, which is an affliate of Al-Qaeda and a designated terrorist organization, Lavrov said in Moscow on February 20.
Syria has been locked in a devastating civil war since March 2011 when the Assad regime cracked down on pro-democracy protests with unexpected ferocity. Protesters have been long demanding the resignation of Syrian President Bashar al-Assad over his autocratic rule.