Reports indicate Syrian security forces may have killed many Alawites, a minority group, in the coastal region of Latakia.
Videos showing numerous bodies have emerged, raising serious human rights concerns and fueling international condemnation.
The Syrian government admits to some wrongdoing but pledges to investigate, while the UN urges all sides to de-escalate.
This violence, occurring in a region traditionally supportive of the Assad regime, threatens regional stability and the peace process.