Two mortar rounds hit the Iraqi capital’s Green Zone Saturday and two rockets slammed into a base housing US troops, security sources said, a day after a deadly American strike. In Baghdad, mortar rounds hit the Green Zone, the high-security enclave where the US embassy is based, security sources said. The Iraqi military said that one projectile hit inside the zone, while another landed close to the enclave. Sirens rang out at the US compound, sources there told AFP. A pair of Katyusha rockets then hit the Balad airbase north of Baghdad, where American troops are based, security sources and the Iraqi military said. “Several rockets targeted Celebration Square and the Jadriya area in Baghdad, and the Balad air base in Salahuddin province, with no loss of life. Further details to come,” the Iraqi military said in a statement. Security sources there reported blaring sirens and said surveillance drones were sent above the base to locate the source of the rockets.