The acting prosecutor-general appealed unsuccessfully to have the decisions overturned on legal grounds.
"The prosecutor general has decided to appeal," a statement said, after a Cairo court Saturday ordered the dropping of murder and corruption charges against Mubarak, who was forced to resign after three decades in power.
The Associated Press said Mr Nasheed told the High Court on Wednesday that the prosecutor general had no authority to appeal, and the prosecutor responded that he appealed on behalf of the state.
Lesa Gongadze had appealed to the prosecutor general to investigate President Leonid Kuchma, his administration chief, Volodymyr Litvin, and a former interior minister, Yuri Kravchenko, in the disappearance of her son, Georgy Gongadze, a year ago.
Clooney attended a court hearing on Wednesday on whether a bizarre appeal by the prosecutor general against Nasheed's conviction should be allowed or not.
After an outcry by Russian liberals, human rights activists and Jewish leaders, a group of Communist and nationalist lawmakers withdrew their appeal to the prosecutor general demanding that Jewish organizations around the country be investigated and possibly closed down.
The meeting came a day before a high court hearing on an appeal by the prosecutor general's office, which had found some procedural irregularities, to review Nasheed's legal case.
The controversy was further exacerbated by Klykov's connections with Pamyat and other anti-Semitic organizations, as well as by his involvement in the "letter of 500", a controversial appeal to the Prosecutor General to review all Jewish organizations in Russia for extremism.
It took several steps that could have popular appeal, like removing an unpopular Mubarak-era prosecutor general and paving the way for the retrial of Mr. Mubarak and other officials.
Egypt's top appeals court also upheld the dismissal of the prosecutor general appointed by Mr Morsi, who had been criticised by the opposition.
Candidates are being considered for the posts of prosecutor general and chief defense counsel, as well as for slots on the appeals panel.
