The CA's Lina Sinjab says protests look likely to continue - the amateur video in this report has not been verified by the CA.
Gunfire has been heard during a fresh protest march in the Syrian city of Deraa, reports say.
The marchers had attended funerals for some of the 25 protesters shot dead on Wednesday by security forces.Demonstrations were also reported in the capital, Damascus, and in a growing number of towns and cities, including Hama and Tall.
Opposition activists had called for nationwide protests after Friday prayers, following a week of unrest.
The city of Deraa, south of Damascus, has become the centre of a serious challenge to the regime of President Bashar al-Assad.
'Peaceful, Peaceful'
Some of the protesters started a fire under a bronze statue of his father, the late President Hafez al-Assad, witnesses reported.More than 40 people are thought to have been killed in the town in a week of protests, although it has been hard to verify the accounts.
A human rights activist told AFP news agency the deaths occurred in Salamen village. A witness told the al-Jazeera television channel at least 20 had died.
In Damascus, hundreds marched on King Faisal Street chanting: "Peaceful, Peaceful, God, Syria, Freedom".
This protest was broken up by security forces and many were arrested, reports say.
Another protest reported to the CA by an eyewitness took place around al-Rifai near Qasar Sousah Square.
Supporters of Mr Assad were also staging protests in the capital, and clashes erupted between the two sides.
In the central city of Hama, hundreds of people were said to have gathered on the city streets to chant "freedom".
In 1982, the Syrian army put down an uprising led by the Muslim Brotherhood in Hama. Rights groups believe that tens of thousands of civilians were killed when large parts of the city were destroyed in the military assault.
In Tall, witnesses quoted by the Reuters news agency said about 1,000 people had rallied to show their support for the Deraa protesters, and were chanting slogans denouncing members of the ruling Assad family.
Demonstrations which ended violence were also reported in the cities of Latakia and Homs. One person was killed in each place, the Associated Press news agency quoted an activist as saying.
There were also protests in Banias and Dahel, AFP reported.
Changes promised
On Thursday, the Syrian government said it would consider political reforms, including the possible ending of emergency laws introduced in 1963. The government also said it would put on trial those suspected of killing several protesters in Deraa.
Mr Assad later ordered the release of everyone arrested during the "recent events", state media said.
Presidential spokeswoman Bouthaina Shaaban blamed outside agitators for whipping up trouble, and denied that the government had ordered security forces to open fire on protesters.
But she said this "did not mean mistakes had not been made".
The US has urged Syria to stop attacking protesters.
White House spokesman Jay Carney said Washington was deeply concerned at what was happening.
"We strongly condemn the Syrian government's attempts to repress and intimidate demonstrators," Mr. Carney said.