Dozens of people have been killed or injured in clashes between security forces and supporters of former President Bashar al-Assad this week in Syria, as the country has been plunged into violent unrest in recent hours.
Clashes erupted on Thursday in the Latakia and Tartous regions on the Mediterranean coast, areas where support among Syrian Alawites for Assad was strong and where there have been outbreaks of sectarian violence over the past three months.
The Assad family, members of the minority Alawite sect, ruled Syria for more than half a century until Assad was overthrown late last year by Sunni Islamist militants who sought to reshape the country's political and sectarian order.
Syria's Alawites, about 10% of the population, were considered privileged under the Assad regime, and while many Alawites have laid down their arms since December, many others have not.
"We stand on the threshold of a critical phase that requires awareness and discipline," Syria's interior ministry said on Friday.
The official Syrian news agency SANA said that after several police and security personnel were killed, "large and disorganized crowds moved towards the coast."
Anas Khattab, the head of Syrian intelligence, said that "former military and security leaders associated with the defunct regime were behind the planning and execution of these crimes."
He said the "treacherous operation" had taken the lives of "dozens of our best people in the army, security and police".
Videos on social media published since Thursday appear to show numerous casualties among Syrian security forces and young people in civilian clothes.