Turkish police use pepper spray against pro-Kurdish protesters

ANKARA (Reuters) - Turkish police used pepper gas to disperse pro-Kurdish protesters in Ankara and Istanbul on Sunday, detaining at least 12 people in Istanbul, Reuters witnesses said.

The protesters were demonstrating against the Turkish military's operation against a U.S.-backed Kurdish militia in Syria's northern Afrin province.

Turkish President Tayyip Erdogan had earlier warned supporters of the pro-Kurdish opposition not to protest the military's operation, saying security forces would intervene if they demonstrated.

(Reporting by Tuvan Gumrukcu; Writing by Ece Toksabay; Editing by David Dolan)