The police chief said today at the press conference that the officer sustained an injury to his face during the physical struggle within/at the vehicle and was later treated at a hospital.
From Wes Lowery’s account of his arrest:
During this time, we asked the officers for badge numbers. We asked to speak to a supervising officer. We asked why we were being detained. We were told: trespassing in a McDonald’s.
“I hope you’re happy with yourself,” one officer told me. And I responded: “This story’s going to get out there. It’s going to be on the front page of The Washington Post tomorrow.”
And he said, “Yeah, well, you’re going to be in my jail cell tonight.”
I’d like to add that he (Officer who shot Brown) was quickly removed from the scene and taken to the hospital by another officer. His cruiser was left at the scene.