Dozens of people were killed at dawn in Douma city to the northeast of the capital Damascus, with both the government and the rebels accusing each other of the massacre.
The state-run SANA News Agency said that an "armed terrorist group has committed an ugly massacre that claimed the lives of 25 people who were killed by knives near Hawa Mosquein Sli Bin Taleb Street in Douma."
The opposition accused the Syrian government of being behind the “massacre".
More top news
Study suggest that the number of takeaway outlets has significantly increased over the last 20 years, particularly in the poorest areas.
A teachers' union has suggested the number of teachers facing abuse on social media has more than doubled in just 12 months.
A survey has found that one in five young professionals in the UK consider themselves to have a drinking problem.