Teenager planned gun rampage at school prom

An 18-year-old gunman who opened fire with a high-powered rifle outside a Wisconsin high school prom, wounding two youngsters before being killed by a police officer, intended to carry out a shooting rampage inside, a school chief has said.

Investigators would not say whether Jakob Wagner targeted the wounded teenagers specifically, or discuss a possible motive for the shooting outside Antigo High School late on Saturday.