(Xinhua) -- Eight members of Iraqi security forces were killed and at least 15 more wounded along with two missing by a truck bomb in Baghdad, police said. The blast occurred after dusk in southeastern Baghdad's Al-Obeidi neighborhood, from which series of mortars and rockets were fired at a nearby U.S. military base on Tuesday afternoon, said a police officer. A truck parked there suddenly came into explosion when the police and army rushed to a suspect site of rocket launches targeted at U.S. military bases and just began inspecting the area, he said. Eight Katyusha rockets simultaneously struck two U.S. bases in eastern Baghdad earlier on Tuesday, causing no casualties, an Interior Ministry source said. On Monday, over ten rockets hit the area near Baghdad's international airport and inside the adjoining U.S. Camp Victory base, killing five Iraqis and injuring two U.S. soldiers.