Four suicide bombers hit Syria's Raqqa-SDF

Four suicide bombers struck in Syria's Raqqa on Wednesday, a spokesman for the U.S.-backed Syrian Democratic Forces (SDF) which controls the city said in a message to journalists.

"Four suicide bombers blew themselves up," said Mustafa Bali, head of the SDF's media office, in an online chat when asked about blasts in Raqqa. (Reporting By Angus McDowall; Editing by Hugh Lawson)