All six people aboard the plane − a pilot and copilot, two medical personnel, a patient and her mother − died in the crash Friday.

It could be days — or more — until authorities are able to confirm the number of dead and injured, said Adam Thiel, the city's managing director. As of Saturday morning, officials confirmed seven dead — six on the jet, one person on the ground — and 19 injured.

Investigators have also located the aircraft's black box, CBS reports. It could provide clues into the cause of the crash.