IN PHOTOS: Newtown, Connecticut shooting
Among those killed by 20-year-old Adam Lanza were 20 children attending classes at Sandy Hook Elementary School

Perhaps the second highest death toll in a US school shooting, the horrific incident at Sandy Hook Elementary School in Newtown, Connecticut has left parents and even President Barack Obama in mourning.

At least 26 people were killed when a 20-year-old gunman Adam Lanza entered the primary school on Friday, December 14, and started shooting.

20 of those killed were children and 6 were adults. Lanza, who also allegedly killed his own parents, died at the crime scene. Another body was also found off the school premises.

In a televised statement, Obama tried to fight back tears and said he mourned the dead in the school shooting. The string of school shooting incidents has left questions about the need for a policy on gun control. Below is a collection of photos from Agence France-Presse. –