A Topeka man who authorities accuse of attacking a police officer is now facing five charges. Shawnee County District Attorney Mike Kagay announced Monday that he charged 22-year-old Justin Reed of Topeka with aggravated battery of a law enforcement officer, two counts of interference with law enforcement and two drug charges. Authorities say an officer who was responding to an unrelated call on Thursday was attacked by a man who rode by on a bicycle. Investigators say the attacker tried unsuccessfully to grab the officer's gun. A bystander helped pull the man off the officer, who was not seriously injured.