Capitol Police officer Brian Sicknick, who engaged rioters, suffered two strokes and died of natural causes, officials say

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, 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, but prosecutors have not tied that exposure to Sicknick’s death.