A Turkish F-16 fighter jet takes off from Incirlik airbase in the southern city of Adana, Turkey, July 27, 2015. REUTERS/Murad Sezer

DIYARBAKIR, Turkey (Reuters) - Ten Islamic State militants were killed in northern Syria by coalition air strikes and cross-border artillery fire from Turkey, military sources said on Wednesday.

A total of seventeen targets, including mortar positions, were hit in the operation, which was carried out on militants thought to have been preparing for an attack on Turkey, the sources said.