Philadelphia police officer shoots dirt bike rider, who displayed a gun, in Fairhill neighborhood; rider in critical condition.

Philadelphia police are investigating an incident where an officer shot a dirt bike rider in the city's Fairhill neighborhood. The rider, who displayed a gun during a confrontation with officers, is in critical condition at Temple University Hospital. The police department has increased enforcement efforts against the illegal practice of riding dirt bikes and ATVs on city streets. The incident is under investigation.