ISTANBUL (Reuters) - A blast ripped through a street in the northern Syrian town of al-Rai on Sunday in what was believed to be an Islamic State suicide bombing and 12 wounded, mostly children, were brought to a hospital in nearby Turkey, security and hospital sources said.

The town of al-Rai, which is 2 km (1 mile) south of Turkey's Kilis border province, is in an area under the control of Turkey-backed rebels and was seized from Islamic State militants in Ankara's "Euphrates Shield" operation launched in August.

(Writing by Daren Butler; Editing by Mark Potter)