Rights group the Organization of Defending Prisoners of Conscience in Syria has accused the authorities of threatening an activist with death, dpa reported.
The organization said in a statement Wednesday that Syrian security authorities had threatened its member Hassan Ali with "physical liquidation" for exposing "flagrant violations of human rights" in the country.
"The organization holds the security agencies in Syria responsible for any attack on Hassan's life," it added.
Ten people were killed Tuesday in anti-government demonstrations across Syria, according to activists.
They said that the Syrian army was beefing up its presence in the central city of Homs, which has been for weeks the focal point for mass protests against the regime of President Bashar al-Assad.
More than 1,400 people have been killed by the security forces since pro-democracy protests began in Syria in mid-March, local human rights advocates say.
These reports are hard to verify as the Syrian authorities have barred most foreign media and international human rights groups from the country.