BEIRUT, Aug 2 (Reuters) - Buses carrying Syrians began leaving refugee camps in the Lebanese border area of Jroud Arsal on Wednesday under a truce deal between Shi'ite Hezbollah and Sunni Islamist Nusra Front militants, a security source and Hezbollah's Al Manar TV said.

Thousands of Syrians including militants and their families and refugees are to leave the border zone and head for Syria's Idlib province under the agreement.

(Reporting by John Davison and Tom Perry; editing by John Stonestreet) ((John.Davison@thomsonreuters.com;))