An ex-US Marine who had suffered from depression and once tweeted about killing “everyone I see” opened fire in camouflage gear at a supermarket, gunning down two co-workers before killing himself.

A CALIFORNIA teenager who killed two classmates and wounded 13 others in a school shooting rampage tearfully apologised as he was jailed for 50 years to life.

A California teenager who killed two classmates and wounded 13 others in a school shooting rampage has tearfully apologised as he was jailed for 50 years.