Dubbing the woman the "Rub-A-Dub Robber," the FBI said in a statement that she held up the Lonestar Bank on Texas 6 in the northwest suburbs of Houston about 10 a.m. Thursday.
The statement says the woman entered the bank, brandished a black semiautomatic pistol and demanded money. The statement didn't say how much she got away with.
She's described as a black woman, about 25 years old, standing 5 feet 8 inches tall and weighing 160 to 170 pounds with a medium-to-large build and a medium-to-dark complexion. She left the bank in an older-model, beige sedan.