School killer TJ Lane
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Killer TJ Lane smirks and jeers at victims' families

In a courtroom in the US state of Ohio on Tuesday, school gunman TJ Lane smirked as a judge sentenced him to life in prison.

After entering the courtroom, he removed a button-down shirt to reveal a T-shirt that read "killer".

In February last year Lane, now 18, opened fire in Chardon High School's cafeteria, killing three students and wounding three others.