Investigators struggle to build murder case in death of US Capitol Police officer Brian Sicknick
By Evan Perez, David Shortell and Whitney Wild CNN
Updated 9:56 PM ET, Tue February 2, 2021
According to one law enforcement official, medical examiners did not find signs that the officer sustained any blunt force trauma, so investigators believe that early reports that he was fatally struck by a fire extinguisher are not true.
One possibility being considered by investigators is that Sicknick became ill after interacting with a chemical irritant like pepper spray or bear spray that was deployed in the crowd. But investigators reviewing video of the officer's time around the Capitol haven't been able to confirm that in tape that has been recovered so far, the official said.
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