Early Sunday morning, firefighter Graham Hoffman, 29, was in the back of an ambulance transporting a patient to the hospital in Kansas City, Missouri, when he was stabbed in the chest, piercing his heart, according to a press release published on the city's website.

Graham Hoffman, 29, was “critically injured after being stabbed in the chest, piercing his heart,” while taking a patient to the hospital on what began as a routine medical call from

Graham Hoffman, 29, was taking a patient to the hospital following a routine medical call from police when he was stabbed in the chest, piercing his heart.