BREAKING: At least one dead following US high school shooting

This is a developing story.

According to emerging reports, police in the States are currently investigating a shooting at a high school in Texas.

One person has been shot by gunmen at the Alpine High School in western Texas, and for a time three assailants were on the loose.

It has since been established that one of the shooters has now been confirmed dead.

y'all please pray for my hometown, Alpine has an active shooter at my cousin's school.

— Ty (@TylerLujan22) September 8, 2016

Commenting on the devastating incident, the school district confirmed that the school, which has approximately 280 students, has been placed on critical lockdown.

Brewster County Sheriff confirms: shooter dead from apparent self-inflicted shot. One student injured.

— Travis Bubenik (@traviswesttx) September 8, 2016

The shooting has taken place just two weeks into the new school year.