Teen shoots girl in Maryland school, killed in confrontation

A shooting at a Maryland high school Tuesday morning left three people injured including the shooter.

Deputies, federal agents and rescue personnel, converge on Great Mills High School, the scene of a shooting, Tuesday morning, March 20, 2018 in Great Mills, Md. (AP Photo/Alex Brandon )

GREAT MILLS, Md. — A teenager armed with a handgun shot and critically wounded a girl inside a Maryland school on Tuesday and the shooter was killed when a school resource officer confronted him moments after the gunfire erupted. A third student was in good condition after he was shot.