The source, speaking on condition of anonymity, did not set a time for the start of the latest operation but confirmed it would end the Kerdasa raid, which started on 19 September.

Authorities originally said the Kerdasa campaign would continue for several days without setting a specific timeframe.

The source added that troops were able to arrest dozens more criminals involved in violence in the Giza town.

According to the source, the operation will be launched in al-Saff because many Muslim Brotherhood fugitives are hiding out there.