The death toll in Syria’s civil war on Wednesday was more than 300, the highest in a single day since March 2011, said human rights activists.

According to UK-based Syrian Observatory for Human Rights director Rami Abdel Rahman, more than 305 people were killed across the country – “and this is only counting those whose names have been documented.

“If we count the unidentified bodies, the figure will be much higher,” Rahman told the AFP news agency in a telephone interview. Of those killed, he added, at least 199 were civilians. On July 19, a similar number – 302 – were killed, according to the watchdog organization.

Massive explosions shook Damascus on Wednesday as twin suicide bombings by rebel forces destroyed two key Syrian government military headquarters buildings, killing four guards and wounding 14 others. Iran’s Press TV said one of its correspondents, a Syrian, was killed by sniper fire and its Damascus bureau chief wounded as they reported from the scene.

Despite the savage clashes between opposition forces and loyalist troops fighting to keep President Bashar al-Assad in power, protesters are continuing to demonstrate against the government. On Friday, a protest was held in Yabroud, one hour north of Damascus.

Various human rights groups have estimated that more than 27,000 Syrians have died in the ongoing civil war wracking the nation as opposition forces continue efforts to topple the regime of President Bashar al-Assad. More than a quarter of a million Syrians have fled their land, taking refugee in neighboring countries such as Turkey, Lebanon, Iraq and Jordan.