Syrian army troops shelled the port city of Latakia on Sunday for the second day in a row, causing an unspecified number of casualties, opposition activists said, dpa reported.
In a separate incident, a boy was killed in the central city of Hama when security forces fired on a mosque, according to the Federation of the Coordination Committees of the Syrian Revoluion.
On Saturday, the army began an operation in Latakia's southern district of Ramleh triggering an exodus, the London-based Syrian Observatory for Human Rights said.
At least 11 civilians were killed Saturday in a series of army actions in Latakia, Hama and the central region of Homs, according to activists.
Footage posted on the internet showed what activists described as overnight anti-government protests in several areas including the capital Damascus, the north-eastern city of Deir al-Zour and Daraa in the south.
At least 1,785 civilians and 410 security personnel have been killed since pro-democracy protests began in Syria in mid-March, according to the Syrian Observatory for Human Right.
It is hard to verify these reports, as the Syrian authorities have barred most foreign media and international human rights groups from the country.