According to the medical examiner’s office, officer Brian Sicknick, 42, died of several strokes the day after being sprayed with a chemical outside the US Capitol when it was under siege.
The discovery would make it more difficult for investigators to prosecute someone with his murder.
Sicknick was one of hundreds of Capitol Police officers who fought former President Donald Trump supporters who occupied the building on January 6 in an effort to prevent Congress from officially certifying President Joe Biden’s election win.
Rioters shot Sicknick with a toxic agent around 2.20 p.m. that day, and he died around 10 p.m. He died the next day in a nearby hospital.
George Tanios and Julian Khater, two guys, are accused of assaulting three police officers, including Sicknick, by injecting them with a chemical irritant.
In cases where a disease alone causes death, the city characterised the manner of death as “natural” It said that if death was “hastened by an injury,” the manner of death was not considered natural.
The medical examiner’s reports make it difficult for federal prosecutors to file murder charges in connection with Sicknick’s death.
The medical examiner’s decision was first reported by the Washington Post.
According to the journal, citing an interview with medical examiner Francisco Diaz, the autopsy showed no proof that Sicknick had any kind of allergic response to the chemical spray he was subjected to, nor was there any evidence of internal or external trauma.