A Cairo appeals court on Monday upheld a one-year sentence handed to former Egyptian premier Hisham Qandil, in the latest blow to ousted president Mohamed Morsi's inner circle.

Qandil is accused of failing to execute a court ruling ordering the annulment of a public company's sale and the reinstatement of its employees.

An unpopular prime minister, Qandil has kept a low profile since Morsi's overthrow by the army on July 3.

"There will be an order for his arrest and he will have to serve his sentence," a security official said.

Earlier this month, prosecutors ordered the freezing of Qandil's assets and he was prevented from leaving the country pending the investigation.

Egypt's army-installed authorities have launched a massive crackdown on Islamists that has seen hundreds killed and over 2,000 jailed.

Morsi, Egypt's first elected president, is himself in jail, as is the leadership of his Muslim Brotherhood movement.

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