Police are investigating after a first responder was stabbed while attending to an individual in an ambulance as it was headed through North Philadelphia in Thursday morning. According to police, in an incident that happened at about 6:30 a.m., a medic that was working on a man — who himself had been stabbed — was attacked by the individual he was tending to. The incident, officials said, happened as the ambulance was driving in the area of North 22nd and West Diamond streets. The medic, a 40-year-old man, was stabbed twice before the attacker jumped out of the vehicle and fled the scene of the incident, officials said. However, law enforcement officials said the suspected attacker has been recaptured and is in police custody. The medic that was attacked has been taken to a nearby hospital and was listed in critical condition, officials said. An investigation is ongoing, according to police. This is a breaking news story. It will be updated as new information becomes available. Sign up for our Breaking newsletter to get the most urgent news stories in your inbox.