From the Washington Post news section:
By Peter Hermann
April 19, 2021 at 12:46 p.m. PDT
Capitol Police officer Brian D. Sicknick suffered two strokes and died of natural causes a day after he confronted rioters at the Jan. 6 insurrection, the District’s chief medical examiner has ruled.
The ruling, released Monday, likely will make it difficult for prosecutors to pursue homicide charges in the officer’s death. Two men are accused of assaulting Sicknick by spraying a powerful chemical irritant at him during the siege.
In an interview with The Washington Post, Francisco J. Diaz, the medical examiner, said the autopsy found no evidence the 42-year-old officer suffered an allergic reaction to chemical irritants, which Diaz said would have caused Sicknick’s throat to quickly seize. Diaz also said there was no evidence of internal or external injuries.
The medical examiner noted Sicknick was among the officers who engaged the Capitol mob and said “all that transpired played a role in his condition.”
Sicknick collapsed after returning to his office during the riot and died about eight hours later, on Jan. 7.
Diaz said Sicknick suffered two strokes at the base of the brain stem caused by a clot in an artery that supplies blood to that area of the body. Diaz said he could not comment on whether Sicknick had a preexisting medical condition, citing privacy laws. …
The senator [Cory Booker] described Sicknick’s death as a “crime” that “demands the full attention of federal law enforcement.” He said that “when white supremacists attacked our nation’s capital, they took the life of one of our officers. They spilled his blood, they took our son away from his parents. They took a sibling away from their brothers.”