Uganda's constitutional court has ruled that the military can not try opposition leader Kizza Besigye on terror charges.

Authorities have charged Besigye, who is running in Uganda's February 23 presidential election, with treason, terrorism, illegal weapons possession and rape.  Twenty-two of his supporters also are facing treason charges.

Besigye was arrested in November after returning to Uganda to challenge President Yoweri Museveni in next month's election.

Besigye is the leader of the Forum for Democratic Change.  Critics say the charges against him are politically motivated and designed to derail his challenge for the presidency.

Some information for this report was provided by AP and Reuters.