Baghdad, Oct 4, SPA -- A suicide car bomb exploded at a checkpointat the main entrance of Baghdad's Green Zone on Tuesday,killing two Iraqi policemen and wounding one, police said.The high-security area is home to Iraq's parliament and theU.S. Embassy, the Associated Press reported. The explosion, which sent plumes of black smoke up overthe Green Zone, occurred at about 1:20 p.m. at the gatethat many Iraqi employees use to enter and leave the areawhere they work for Iraq's government or for the U.S. andBritish embassies. The powerful blast killed two Iraqi policemen and woundedanother one, said police Lt. Mohammed Kheyon.--SPA1427 Local Time 1127 GMT www.spa.gov.sa/294181