The latest on the running death toll from the protests today:
Security forces fired on demonstrators in the central Syrian cities of Homs and Hama Friday, killing at least 13 people, rights activists there said, AFP is reporting.
At the same time, an officer and four policemen were killed by armed groups in Homs, state news agency SANA said.
"Eight people were killed and several others gravely wounded by firing from the security forces on a demonstration" in the central city of Homs, an activist there said.
In Hama, also north of the capital, another five demonstrators were killed, another activist said.
Meanwhile, SANA said an "armed criminal group" opened fire fired on a joint army-police-security forces checkpoint in Baba Amr in Homs, killing an officer and four policemen."
The agency said the bodies of those killed were then "mutilated" by their assailants.
Earlier, activist Najati Tayara had said security forces opened fire to disperse protests that broke out in Homs after weekly Muslim prayers, and that five people were killed.