Baghdad, Feb 12, SPA -- A mortar bomb landed in Baghdad's Green Zone on Sunday but caused no injuries, the U.S. military said. The Green Zone is the headquarters of the Iraqi government, the U.S. military and diplomats, Reuters reported. Insurgents fire mortar bombs and rockets at the zone as part of their campaign to topple the U.S.-backed government. --SPA 15 05 Local Time 12 05 GMT www.spa.gov.sa/329804