Syrian activists have vowed more demonstrations against President Bashar Assad's regime as the government crackdown on opponents intensifies.
Activists have called for a Friday of rage following Muslim prayers, to commemorate the slayings exactly a week ago that saw 112 killed in just one day.
Friday's demonstrations have the backing of the outlawed Islamist group, the Muslim Brotherhood, which was crushed by the regime in 1982.
Assad has tried to quell the protests, which are the gravest challenge to his family's 40-year ruling dynasty.
Friday's planned protests come following a report by witnesses and human rights groups on Thursday according to which Syrian army units have clashed with each other over following President Assad's orders to crack down on protesters in Daraa, a besieged city at the heart of the uprising.
While the troops' infighting in Daraa does not indicate any decisive splits in the military, it is significant because Assad's army has always been the regime's fiercest defender.
It is the latest sign that cracks - however small - are developing in Assad's base of support that would have been unimaginable just weeks ago. About 200 mostly low-level members of Syria's ruling Baath Party have resigned over Assad's brutal crackdown.
Ausama Monajed, a spokesman for a group of opposition figures in Syria and abroad, said the clashes among the soldiers have been happening since Monday.
"There are some battalions that refused to open fire on the people," Monajed told The Associated Press, citing witnesses on the ground in Daraa, a city of 75,000 near the Jordanian border. "Battalions of the 5th Division were protecting people, and returned fire when they were subjected to attacks by the 4th Division."