One of the worst school shootings in US history has left 20 children and eight adults dead. The children were all aged between five and 10.

A gunman killed 26 people, including 20 young children, at a US school where his mother worked today in one of the worst school shootings in the country’s history.

A gunman killed 27 people, including 18 young children, at a US school today, an official said, in one of the worst school shootings in the country’s history.