A native of South River, N.J., Sicknick had returned to Capitol Police headquarters after the attack, when he collapsed and was admitted to the hospital. He died the next day.
The day after the attack, Capitol Police said that Sicknick, who joined the force in 2008, “was injured while physically engaging with protesters.”
In a statement on Monday, Capitol Police said it accepted the findings from the medical examiner’s office.
“This does not change the fact Officer Sicknick died in the line of duty, courageously defending Congress and the Capitol,” it said.