Two people have been discharged from hospital and a barber shop remains taped off after shocked residents saw a "man on fire" lying in the road.
Police, firefighters, paramedics and the Great North Air Ambulance Service (GNASS) were called to Stamfordham Road in Westerhope, Newcastle, on Tuesday morning.
Four people, two of which were suffering from serious injuries, were transported to the Royal Victoria Infirmary (RVI) in the city.
