KABUL - An Afghan police officer who shot and killed a veteran Associated Press photographer during the country’s 2014 presidential election has been sentenced to 20 years in prison, a Supreme Court official told Reuters on Sunday. The official spoke on condition of anonymity because he was not authorised to give statements to the press. A second AP reporter was injured in the attack, which took place in eastern Khost province while they were sitting in their car inside a government compound. Anja Niedringhaus, 48, a German national, was killed instantly while Canadian reporter Kathy Gannon who had covered conflict in Afghanistan for 30 years survived the shooting.