U.N. says crucial evidence Hammarskjöld's death still hidden

Sixty-five years after United Nations Secretary-General Dag Hammarskjöld died in a mysterious plane crash during a peace mission in Africa, a new U.N. investigation has concluded that governments almost certainly possess important information they have yet to disclose about his death.

The findings raise questions about possible foreign involvement in the September 1961 crash and governments' failure to provide investigators with full access to intelligence and historical records.