The government said Sunday it may not release the findings of an investigation into the plane crash that killed President Mohammad Zia ul-Haq because the report "could contain matters contrary to the national interest."

"I cannot hold out any assurance at this stage," Defense Minster Mahmood Haroon told the Senate when asked by opposition members whether the report on the Aug. 17 disaster would be made public."It could contain matters contrary to the national interest."

Zia, U.S. Ambassador Arnold Raphel and 28 other people, including much of the country's top military brass, were killed when their C-130 military transport plane crashed minutes after takeoff from the eastern city of Bahawalpur.