The death of a 28-year-old Scranton firefighter was caused by multiple pulmonary embolisms from COVID-19, Lackawanna County Coroner Tim Rowland announced Wednesday. Stephen Sunday, who died Tuesday, previously tested positive for the COVID-19 coronavirus and was in quarantine at home when he became critically ill and was hospitalized, Rowland said. A pulmonary embolism is a blockage in one of the pulmonary arteries in the lungs. A firefighter since January, Sunday died at Geisinger Community Medical Center. As of Dec. 16, the city said 14 firefighters had tested positive for COVID-19 and another six were in quarantine, bringing the number of personnel out to 20 in a department with 135 firefighters.