Turkey has bombarded so-called Islamic State (IS) targets in northern Syria amid reports Syrian rebels are to launch an offensive against the group.
Artillery positions inside Turkey fired on IS as well as Kurdish YPG militia targets in the towns of Jarablus and Manbij.
Some 1,500 Turkish-backed Syrian rebels are thought to be in the Turkish town of Gaziantep waiting to attack.
This follows a bomb attack on a wedding there that killed more than 50 people.
The BBC's Mark Lowen in Gaziantep says the imminent offensive may have spurred the suicide bombing, thought to be the work of IS.