The teenagers were being held in the West Midlands by officers from the Police Central e-Crime Unit on suspicion of offences under the Malicious Communications Act and the Computer Misuse Act.

Yesterday, an organisation called Team Poison claimed to have carried out a cyber-attack in response to the alleged detention of innocent people on terrorism charges and the recent ruling to deport a number of terror suspects to the United States

The Daily Telegraph also understands that the group was angry at Government plans to introduce so-called snooping laws, allowing the authorities greater access to personal communications.

The group, which claims to have carried out a string of similar assaults on other organisations including Nato, launched a two day “phone bombing” exercise against the anti-terror hotline, jamming the network and preventing genuine callers from getting through.

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