PATNA, Aug. 17 -- A parked passenger bus suddenly caught fire at the Bairiya bus stand in Muzaffarpur on Sunday, police said, adding that the incident triggered panic among passengers and bus employees. On being informed, local police and fire tenders reached the spot and launched efforts to douse the flames. The fire was brought under control after two-and-a-half hours. However, there were no reports of casualties or injuries. Local staff said there were no passengers on the bus when the fire broke out. SDPO City-2 Vinita Sinha said firefighters were pressed into service to control the blaze. "There were no casualties. A probe will be conducted to ascertain the cause of the fire. Preliminary information suggests that a short circuit caused the fire, "the SDPO City-2 said....