Operation Fair Play was the code name for 5 July 1977, coup by Pakistan Chief of Army Staff General Muhammad Zia-ul-Haq, overthrowing the government of Prime Minister Zulfikar Ali Bhutto. The coup itself was bloodless, and was preceded by social unrest and political conflict between the ruling leftist Pakistan Peoples Party government of Bhutto, and the right-wing Islamist opposition Pakistan National Alliance which accused Bhutto of rigging the 1977 general elections. In announcing the coup, Zia promised "free and fair elections" within 90 days, but these were repeatedly postponed and it was not until 1985 that ("party-less") general elections were held. Zia himself stayed in power for eleven years until his death in a plane crash.