A 16-year-old gunman killed four people, including three children, at an elementary school in Bend, Oregon.

He forced his way into Silver Rail Elementary by firing through its locked doors around 1 p.m.

The dead were children aged five, eight and eleven, and one teacher.

A seven-year-old pupil and a 54-year-old teacher were critically injured.

An armed community member followed him inside and shot him dead, police said.

Officers arrived at 1:02 p.m., seconds before the suspect was killed.

The motive remains under investigation, and vigils are planned for the victims.

Read the full article for more details on the Bend school shooting.