Pittsburgh EMS, Fire, and Police responded to the 1300 block of Western Avenue around 11:35 a.m. for a vehicle into a structure.
When first responders arrived, they observed heavy smoke and occupants leaving the structure.
A Mass Casualty Incident (MCI) notification was issued due to the severity of the damage and unknown amount of entrapped victims. Medics from nearby Ross / West View and Baldwin assisted Pittsburgh EMS with the injured.
Firefighters extinguished the 2-alarm fire and continued to search for entrapped victims alongside medics.
There were around 10 employees and five donors inside at the time of the collision.
One patient who suffered injuries was transported to a local hospital in critical condition. EMS evaluated many other on scene.
A medic from the Pittsburgh Bureau of Emergency Medical Services and two Pittsburgh Firefighters were treated for minor smoke inhalation.
Medics pronounced three victims deceased, one being an occupant of the vehicle.
The Medical Examiner will determine the cause of death.
The Collision Investigation Unit and The Fire Investigation Unit arrived to process the scene, and the investigation is ongoing.