More than 700 people have been arrested in Britain and tens of millions of pounds have been seized after the police infiltrated a top secret communications system used by criminal gangs.
It’s being called the biggest and most significant law-enforcement operation ever carried out in the UK.
The gangs were using a device that looks like a normal mobile phone. But each one costs up to £3,000 and they were used by high-level criminals to talk to each other.
The gangs believed nobody could listen in, but they were wrong.
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