A top Egyptian court upheld on Saturday a life sentence for ousted Islamist president Mohamed Mursi in a case revolving around state documents leaked to Qatar, a judicial official said.

The Court of Cassation ruling, which is final, overthrew a 15-year sentence for Mursi on charges of stealing the documents, handed during the initial sentencing.

But it upheld a life sentence -- 25 years in prison in Egypt -- on the charge of leading an illegal organisation, his lawyer Abdel Moneim Abdel Maqsud told AFP.

The ruling came after lawyers appealed the initial 2016 sentencing.

The court also upheld death sentences for three other defendants, a life sentence and a 15-year sentence for two others.

The trial hinged on accusations that the defendants had passed on state secrets to Qatar, an ally of Mursi's Islamist government that has denounced his 2013 overthrow by the military.

Qatar has denied the charges.

Hundreds of Mursi supporters were killed during protests following his ouster. Thousands of others were detained in a crackdown that was later expanded to include leftist and liberal dissidents.

Mursi's Muslim Brotherhood has been blacklisted as a terrorist group.

source: Alarabiya