The fresh killing came a day after, Assad pledged that military assaults on civilians had been halted.
Russia and Turkey meanwhile dismissed growing calls led by US President Barack Obama for Assad to quit, offering the embattled Syrian leader rare support despite a damning UN report on his “apparent shoot to kill” policy.
On the political front, a group of “revolutionary blocs” formed a coalition vowing to bring down the regime and paid tribute to more than 2,000 civilians killed in crackdown on protesters since mid-March.
The Syrian Observatory for Human Rights said 11 people, including an 11-year-old and a 72-year-old, were killed in the southern province of Daraa, epicentre of the anti-regime protests that erupted March 15.
Three others were killed in the central city of Homs and one in the Harasta suburb of Damascus.