A lawyer for a son of ousted dictator Moammar Gadhafi has accused Libyan authorities of showing a "blatant disregard" for the International Criminal Court by announcing they will put Seif al-Islam Gadhafi on trial in August.

In an urgent filing to the Hague-based court Tuesday, British lawyer John Jones is asking appeals judges to reject Libya's request to suspend an order that Tripoli surrender Seif al-Islam to the court.

Libyan authorities are appealing the international court's right to try Gadhafi's one-time heir apparent, saying that he should face justice at home.

Jones says that Seif al-Islam could be executed in Libya before the appeal is completed if he is not handed over to the court.

Libyan prosecutors said Monday that Seif al-Islam and others will go on trial in August.