THE trial of four Afghan teenagers jailed for 10 years each for starting a fire that destroyed a much-criticised refugee camp last year was not up to legal standards, observers have said.

The youths were found guilty on Saturday of “arson with risk to human life” for the fire that broke out at the vastly overcrowded Moria refugee camp on the Aegean island of Lesbos.

Greek authorities left about 12,000 people without help for days after the camp, originally built to house 3,000, was destroyed by the blaze before a new camp was hastily built on a former military firing range.