UPDATE: "Sources said the incident began when police saw the car driving erratically on Independence Avenue. After they tried to stop the vehicle, the driver did a U-turn near the Library of Congress and started driving the wrong way against traffic. […]
The driver then stopped but "revved the engine" and tried to lurch forward.
Fox News is told at least one officer fired a weapon at this point. The suspect was not hit. Further, police said no individuals were injured during the arrest.
ABC News reports: "U.S. Capitol Police have apprehended a female driver after she nearly hit several officers and struck another vehicle near the U.S. Capitol, police said this morning."