Lawyers seeking the release of nine suspected terrorists held at the U.S. military prison at Guantanamo Bay, Cuba, have filed suit demanding the U.S. government justify their clients' detention.

Attorneys from the Center for Constitutional Rights, a U.S.-based human rights group, filed petitions Friday in a federal court in Washington arguing the detentions are unlawful and unconstitutional.

The lawsuits also ask that defense lawyers be allowed to confer privately with the detainees.

The legal action follows a Supreme Court ruling Monday, rejecting the Bush administration's argument that it can legally seize and hold suspected terrorists indefinitely in time of war.

The Supreme Court, the United States' highest legal authority, declared the Guantanamo detainees have the right to challenge their detention in U.S. courts.