Egypt's High Administrative Court ordered on Monday that former president Hosni Mubarak's grandson be allowed to travel abroad.
The court rejected an appeal filed by the State Lawsuits Authority, the legal body which represents the government in judiciary related issues.
The state-affiliated authority challenged a November 2014 decision by the administrative court to suspend a decision barring Omar, the son of Alaa Mubarak, from travelling following an appeal by the ousted president's son.
Mubarak's family was barred from travelling in 2011 pending trial for Mubarak and his sons on charges of illicit gains and tampering with the stock market.
The defendants were convicted and served a three-year prison term for the illicit gains charge. The trial for stock market tampering is still ongoing.
After his ouster in 2011, the former president stood trial in a number of criminal cases on various charges, but received a final conviction in only one corruption case.
Mubarak's sons have been gradually reappearing in the public eye, often being seen in public places around Cairo and holiday getaways.