ISTANBUL (Reuters) - Three Turkish soldiers were killed and seven others wounded in an Islamic State attack in Syria's al-Bab region, security and hospital sources in Turkey said on Thursday.

After the attack, during a Syrian rebel offensive backed by the Turkish military, the wounded soldiers were transferred to hospitals in the Turkish border provinces of Kilis and Gaziantep, sources said.

(Writing by Humeyra Pamuk; Editing by Daren Butler)