A man crashed into a checkpoint on Constitution Avenue usually used by Senators and staff members on weekdays, about 100 yards (91 m) from the entrance of the building on the Senate side.[1] The vehicle rammed into two officers, killing Officer William Evans,[8] and the suspect exited the car while wielding a knife.[9] He began to lunge at the officers and refused to listen to verbal commands before being shot by another officer.[10] He was arrested and hospitalized but later died of his wounds.[11]