Former Egyptian President Hosni Mubarak has been acquitted of alleged involvement in the killings of protesters in the 2011 uprising in the country.

The Court of Cassation's final ruling on Thursday could see Mubarak walk free, said an Aljazeera report.

In 2012, he was found guilty and was sentenced to life by a lower court. He appealed that ruling and was found innocent by the Court of Cassation.

After an all-day hearing, Judge Ahmed Abdel Qawi announced: "The court has found the defendant innocent."

The court rejected demands by lawyers of the victims to reopen civil suits, leaving no remaining option for appeal or retrial.

Mubarak was accused of inciting the deaths of nearly 900 protesters in an 18-day uprising that ended when he stepped down on February 11, 2011.

Mubarak, 88, has spent most of his time in a military hospital since his arrest in 2011. He arrived to court on Thursday on a stretcher.