Hama: In Syria, explosions shook an air base near the central city of Hama but it was not immediately clear what caused them, according to regime media and a war monitor.

Syrian regime TV reported explosions near the air base and later said another explosion was heard inside the air base.

The Britain-based Syrian Observatory for Human Rights said the air base is where government warplanes take off to carry out airstrikes on central and northern Syria. It said the explosion occurred inside the base adding that it was not clear if the explosion was the result of a blast inside an arms depot.