Five people remain hospitalized Sunday after a medevac jet carrying a pediatric patient and her mother crashed into a residential neighborhood in Philadelphia on Friday night, killing seven people and leaving the community shaken.

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

The Jet Rescue Air Ambulance flight that crashed in northern Philadelphia with six people aboard had originated from Miami-Opa Locka Airport earlier on Friday, according to Shai Gold, a spokesperson for the company.