The Egyptian state prosecutor ordered that ousted Islamist President Mohammad Mursi be detained for 15 days for questioning on charges of collaborating with Palestinian militant group Hamas, official MENA news agency reported on Friday.
Mursi will be asked whether he worked with Hamas in attacks on police stations and prison breaks in early 2011, during which the Islamist and other political inmates escaped during the revolt against strongman Hosni Mubarak, it added.
However, the news agency reported that the prosecutor has already questioned the ousted president and "confronted him with the evidence."
State accusations against Mursi include killing prisoners and officers as well as kidnapping soldiers, said MENA.
The report came just hours before people were expected to take to the streets in mass rallies for and against the ousted president. Egypt's army has been holding Mursi in an undisclosed location since deposing him on July 3.
Meanwhile, the Muslim Brotherhood – from which Mursi hails – said that the detention of the ousted president signals the return of the Mubarak regime.
"The accusations read as if they're a retaliation from the old regime, signalling 'We're back in full force," Brotherhood spokesman Gehad El-Haddad told AFP.