ST. PETERSBURG — An Uber driver was beaten Tuesday night by two teens after refusing to drive them, according to St. Petersburg police.Marvin Carroll, 47, responded to a pick-up call at a McDonald’s parking lot at 1020 34th St. N at about 8:40 p.m. A group of young males got into his vehicle, police said, including David Moorer, 17, and his brother Salvatore Henderson, 21.Moorer’s aunt was also there. She told Carroll not to drive them, police said, and explained that her 17-year-old nephew had been reported as a runaway earlier that day.Carroll then told everyone to get out of his car. Then the brothers started hitting the driver, police said. The attack continued outside the vehicle as police said Moorer and Henderson caused the driver to fall and strike his head against the pavement.Carroll was taken for medical treatment and was reported to be in critical condition on Wednesday. Moorer and Henderson both left the area but were arrested a short time later by police.Each brother faces a charge of aggravated battery. Henderson was being held in the Pinellas County jail in lieu of $10,000 bail. Police did not disclose Moorer’s location.