Former prime minister Hisham Qandil was released Tuesday after the prison's authorities sent a letter to the prosecution affirming that he was not facing other charges, reported Al-Ahram Arabic news website.
On Sunday, a Cairo court has accepted the appeal presented by ex-prime minster and annulled his one-year jail sentence.
In September 2013 the Cairo Misdemeanour Court upheld a ruling against Qandil sentencing him to one year in prison for failing to implement an administrative court's verdict ordering the re-nationalisation of the Tanta Flax and Oil Company.
Qandil's release was expected by his attorney and the prosecution as the former cabinet head was not implicated in any other cases.
A source revealed to Ahram that Qandil will be released from Dokki police station.
Qandil was appointed Egypt's prime minster by deposed Islamist president Mohamed Morsi in August 2012 and remained in office until Morsi's ouster on 3 July. He was arrested in December 2013 during what the interior ministry described as an attempt to flee the country to Sudan.