Turkey closed its main border crossings into northwest Syria on Tuesday after Turkish troops came under fire from Syrians angered by violence against their compatriots in Turkey, a Syrian opposition source and residents said.
In Turkey, police detained 474 people involved in attacks targeting the Syrian community across the country overnight, Interior Minister Ali Yerlikaya said, in spreading unrest that began late on Sunday.
Properties and vehicles owned by Syrians were vandalized and set on fire in the central city of Kayseri, stoked by social media reports that a Syrian man had sexually abused a female child relative. Yerlikaya said the incident was being investigated.
The violence spread to the provinces of Hatay, Gaziantep, Konya, Bursa and an Istanbul district, Turkey's MIT intelligence agency said in a statement. There were social media reports of some injuries among Syrians.
Subsequently, hundreds of angry Syrians took to the streets in several towns in the rebel-held northwest Syria, an area where Turkey maintains thousands of troops and has carved out a sphere of influence that has stopped Syrian President Bashar al-Assad from regaining control.