Castillo is accused of walking into the Southwest Bank of Texas at 2222 Shaver Street on Tuesday morning and demanding money from a teller. He fled the bank with an undetermined amount of cash in a 1999 Ford Contour. Witnesses were able to give police the car's description and license plate number. The car had been reported stolen from Advantage Auto Sales in Houston on Monday when a man test drove the car but never returned it. The man had the car, but the car dealership had the man's driver's license. Bank personnel were able to identify Castillo in a photo lineup using the driver's license.