Officer Brian Sicknick died of natural causes after defending Capitol on January 6, medical examiner says

Capitol Police Officer Brian Sicknick died of natural causes a day after defending the Capitol during the January 6 assault, the D.C. medical examiner's office announced Monday. Sicknick was previously believed to have died from injuries sustained during the riot. 

Sicknick died from strokes, the chief medical examiner's office said in a report summary, citing "acute brainstem and cerebellar infarcts due to acute basilar artery thrombosis." In an interview with The Washington Post, chief medical examiner Francisco J. Diaz said Sicknick suffered two strokes at the base of his brainstem caused by a clot in an artery.   At approximately 2:20 p.m. on January 6, Sicknick was sprayed with a chemical substance outside the Capitol, the office said. He collapsed eight hours later and died the following evening.