Shooting reported at Colorado high school, two injured

Two people have reportedly been shot at a high school in Colorado.

KRMG has confirmed with multiple sources that police have surrounded the Arapahoe High School in Centennial, Colorado.

Centennial belongs to the Littleton, Colorado school district.

Littleton Public Schools has placed all of its locations under lockdown.

Early on, police have referred to the incident as an "active shooter situation," indicating it may be ongoing.

Later reports indicated that the suspected shooter was found dead, possibly from a self-inflicted gunshot wound.

An area hospital reported having one student as a patient, and listed the student in critical condition.