A former chairman of the tribe that owns Connecticut's Foxwoods Resort Casino admitted to investigators that he used a tribe-issued credit card for personal expenses and knew that was prohibited, an FBI agent testified Tuesday at his theft trial.

Michael Thomas is accused of improperly charging about $100,000 in personal expenses on a credit card issued by his Mashantucket Pequot Tribal Nation. Prosecutors say the charges included rides by a limousine service to doctor's appointments for his mother and television and satellite radio for himself.