A Missouri woman, Shanetta Bossell, who is accused of allegedly fatally stabbing a Kansas City firefighter paramedic, Graham Hoffman, when he was attending to her injuries, has been charged with first-degree murder.

Kansas City Firefighter Paramedic Graham Hoffman, 29, was killed in the line of duty while transporting a patient after she allegedly stabbed him in the heart in the ambulance.

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.