MIAMI (AP) — A mental competency examination has been ordered in the case of a Muslim imam in South Florida accused of raising money for the Pakistani Taliban terror group.

A federal judge ordered a psychiatric evaluation of 77-year-old Hafiz Khan to take place by Aug. 31. The judge wants to decide if Khan is able to understand his legal proceedings and if he can assist in his own defense.

A hearing on the findings is set for Sept. 7.

Khan and one of his sons are charged with providing material support to terrorists by allegedly funneling about $50,000 to the Pakistani Taliban. They have pleaded not guilty. Charges were dropped against another of Khan's sons.

The case could be delayed indefinitely if the elder Khan is ruled incompetent to stand trial.