Washington, Feb 1 (Reporter) Jet Rescue Air Ambulance, the owner of the plane that crashed in the US city of Philadelphia on Friday, said the aircraft was a medical jet and was carrying four crew members, a child and an accompanying person. "The aircraft XA-UCI, Learjet 55, crashed after take off from Philadelphia. There were four (4) crew members and two (2) passengers (pediatric patient and escort) on board. No further information is available at this time," the company said on LinkedIn. It said it cannot confirm any survivors. Fox News reported that a medical oxygen tank was seen on the ground near the scene of the crash. The broadcaster quoted a police commander as saying there were "pieces everywhere." US President Donald Trump has expressed regret over the plane crash in Philadelphia. The US Federal Aviation Administration (FAA) has reported that there were six people on board the Learjet 55 that crashed in Philadelphia on Friday...////...