ANKARA, Turkey, Safar 8, 1433, Jan 2, 2012, SPA - An official says an explosion at a military ammunitions disposal facility has killed four workers. Ferhat Ozen, the district governor, says the early Monday blast caused a large fire in the military-owned four-storey building in the town of Yahsihan, in the central Turkish province of Kirikkale. Authorities are investigating the cause of the explosion, the Associated Press reported. --SPA 13:03 LOCAL TIME 10:03 GMT www.spa.gov.sa/957916