BAGHDAD, Dec. 11 (Xinhua) -- A Katyusha rocket landed on Wednesday at the perimeter of Iraq's Baghdad International Airport, without causing casualty, an Interior Ministry official said.
The attack took place at night near a military base housing U.S. troops near the airport at the southwestern edge of the city, the official said without giving further detail.
A police officer in the airport told Xinhua that he heard a blast at night and then learned that a Katyusha rocket landed at the perimeter of the airport.
The attack did not affect the movement of the planes in the airport, the officer confirmed.
Two days ago, four Katyusha rockets struck a military base near the airport and wounded six military personnel, according to a statement by the media office affiliated with the Iraqi Joint Operations Command.
Military bases housing U.S. troops across Iraq and the heavily fortified Green Zone in central Baghdad have been frequently targeted by insurgents' mortar and rocket attacks.
Over 5,000 U.S. troops have been deployed in Iraq to support the Iraqi forces in the battles against Islamic State (IS) militants, mainly providing training and advice to the Iraqi forces.
The troops are part of the U.S.-led international coalition that has been conducting air raids against IS targets in both Iraq and Syria.
Mass demonstrations have continued in the capital Baghdad and other cities in central and southern Iraq since early October, demanding comprehensive reform, accountability for corruption, improvement of public services and job opportunities.