During a traffic stop last weekend, Frankie Santos attempted to explain why pills were found in his car, the Martin County Sheriff’s Office said.

He reportedly told deputies he was being treated for a medical condition and prescribed medication by "Dr. Rosa Parks" in West Palm Beach. His explanation was not convincing as deputies ultimately arrested him for possession of a controlled substance, cocaine and marijuana.

Florida Department of Health records do not show a licensed doctor named Rosa Parks, a name most commonly associated with the civil rights icon known for refusing to give up her seat to another passenger on a bus in Montgomery, Ala., in 1955.

Santos, 46, of Port St. Lucie was arrested Saturday in Palm City and released after posting a $20,750 bond.

According to the arrest report, deputies found two pills that turned out to be Alprazolam, a sedative used to treat anxiety and panic disorders and unrelated to the medical condition described by Santos. Upon further searching, deputies found a small amount of cocaine in the front pocket of Santos’ jeans, the report said.

The stop occurred at about 1:45 a.m. Saturday on the 3100 block of Southwest Martin Highway, near High Meadow Avenue.

Prior to the traffic stop, deputies noticed that Santos’ vehicle was slowly drifting from side to side and swerving to stay in the proper lane, the report said. Asked if he was all right, Santos reportedly told deputies he was fine but had become distracted while on the phone arguing with his girlfriend.