Student arrested after school shooting in US

A 13-year-old student wearing a black trenchcoat and carrying an assault rifle walked into a school today and opened fire.

The boy, who was not identified, pointed the gun at two other students as he entered Memorial Middle School in Joplin, Missouri, and was confronted by an administrator, who tried to talk him into putting down the Mac-90 assault rifle, said Joplin police spokesman Lt Geoff Jones.