An Egyptian court has dropped its case against former President Hosni Mubarak over the killing of protesters in the 2011 uprising that ended his 30-year rule and symbolized hopes for a new era of political openness and accountability.

Mubarak, 86, was sentenced to life in prison in 2012 for conspiring to murder 239 demonstrators, sowing chaos and creating a security vacuum during the 18-day revolt, but an appeals court ordered a retrial.

His supporters erupted into celebration when the verdicts of that retrial, which also cleared Mubarak's former interior minister, Habib al-Adly, and six aides, were read out. The defendants had denied the charges.