An 18-year-old student accused of shooting five people at his high school made a reference to the 1999 massacre at Columbine High in Colorado during class earlier this year and simulated guns with his hands, a classmate said.

The boy accused of shooting dead two classmates in the US talked of going on a shooting spree, it is claimed.

Two teenagers died and 13 were wounded when a 15-year-old boy who was picked on and had talked about shooting classmates opened fire in a high school toilet, officials said.