Jeddah, Dhu-AlQa'dah 20, 1436, Sep 4, 2015, SPA -- The General Staff of the Yemeni Army announced today an explosion at ammunition depot in Marib. In a press statement, the explosion resulted in martyrdom of 33 soldiers of the Yemeni Army and the Coalition Forces. The statement added that the investigations are ongoing to disclose circumstances of the incident. --SPA 18:28 LOCAL TIME 15:28 GMT www.spa.gov.sa/w