Ousted Egyptian President Mohammed Morsi is being charged with handing over national security documents to Qatar, the state prosecutor says.

Relations between Egypt and Qatar have been strained since the military ousted Mr Morsi in July 2013 after protests against his one-year rule.

Qatar supports the Muslim Brotherhood, the Islamist group to which he belongs.

He faces several trials for charges including espionage. He has called the court illegitimate.