Engineers are still trying to find the source of a gas leak that has led to the evacuation of 238 workers from the Elgin PUQ oil platform 150 miles off the coast of Scotland. A two-mile exclusion zone has been set up around the platform.
Shell has said its decision to evacuate workers from a neighbouring platform last night was "precautionary".
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The band announced at a free concert on Friday that they would take over the event's Pyramid stage on Saturday June 25.
The victims were collecting permits and escorts a day after their home town was liberated from the extremists.
Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.