Former parliamentary speaker Fathi Sour has been released from custody after being cleared of all charges related to the Battle of the Camel.
Sorour was among 25 Mubarak-era figures to be acquitted on Wednesday of orchestrating one of the revolution's most notorious events when thugs riding horses and camels entered Tahrir Square to attack protesters, leaving 11 dead and hundreds injured.
Sorour had been remanded in custody since 20 April, spending the bulk of his time in Tora Prison with other Mubarak-era officials.
The Illicit Gains Authority is expected to question Sorour in the coming days in relation to corruption charges.
Sorour is considered one of the heavyweights of the Mubarak era. He served as parliamentary speaker from 1990 until the revolution in 2011. He also served as education minister.
He was succeeded as speaker by the Muslim Brotherhood's Saad El-Katatni.
The first post-revolution parliament was dissolved by the then ruling military council in June 2012. Fresh parliamentary elections are expected to take place early next year.