Pakistan declared a day of national mourning for the plane crash. The flight from Karachi crashed into a hillside on the outskirts of the capital, Islamabad, killing all 152 passengers and crew on board. The cause of the accident is not known, but the flight data recorder from the Airbus 321 has been recovered from the scene at Margalla Hills. Emergency workers have found the flight data recorder from the plane. The investigators try to determine the cause of the country’s worst air disaster. The plane was operated by the Pakistani company, Air Blue, which has a good safety record. The crash happened in heavy monsoon rain and poor visibility, but investigators ask why it flew off course over a part of the capital which is a no-fly zone. The force of the crash scattered wreckage over a large area and rescue teams are still recovering the victims’ remains. Health officials say they will need to use DNA to identify many of the severely burnt bodies. Pakistani Prime Minister Yousuf Raza Gilani visited the accident site and expressed shock at the loss of life.