p>A 19-year-old was caught making bomb threats against schools across the country, leading to more than 400 schools being evacuated.
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p>George Duke-Cohan of Watford also sent mass emails to schools across the UK and US informing them that pipe bombs had been planted on their premises while the investigation was ongoing.
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p>At the Luton Magistrates' court yesterday he admitted making bomb threats to thousands of schools as well as a United Airlines flight travelling from the UK to San Francisco last month.
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p>He was arrested in his bedroom in his family home in Watford.
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p>Scroll down to hear the audio
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p>After making hoax calls, George Duke-Cohan was taken in custody for the third time. He claimed that an aircraft had been hijacked by gunmen.
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p>Today's audio release includes George Duke-Cohan as a worried father whose daughter told him her flight was hijacked by gunmen one of whom is carrying bombs.
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p>He is heard complaining as he feigns frustration at not getting an update on the supposed hijacking.
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p>The teenager, who is from Hertfordshire was found guilty of three counts of hoax bomb threats.
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p>Duke-Cohan (pictured) made hoax threats while under investigation for a different set of bomb threats.
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p>Following threats made in March hundreds of schools across the UK were evacuated. Duke-Cohan was arrested a few days later.
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p>But while under investigation in April, he claimed that bombs were placed in both American and British schools.
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p>The fake bomb threats were discovered at the time to be part of an Minecraft gamer feud.
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p>Emails that threatened to send out threats were spoofed to look like they had been sent by a gaming platform known as VeltPvP - the name of a Minecraft player-versus-player server.
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p>More than 24,000 emails were sent to schools across the UK, including in the North East, London, Bristol and Humberside.
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p>While being held on bail for threats to schools, Duke-Cohan called San Francisco Airport and their police officers to report that an explosive was found on the plane.
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p>Hacker group Apophis Squad claimed that flight UAL 949 was grounded as a result of their actions in a tweet posted in August.
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p>Duke-Cohan acted like a worried father while calling the airport. He claimed that his daughter was on the flight.
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p>He informed staff that his daughter had contacted him to inform him that gunmen had hijacked his plane and that one was carrying a bomb.
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p>Bishopsalt School in Uxbridge was one of the 400 that was evacuated due to the bomb hoaxes this year.
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p>After being threatened, the 400-school evacuation of Selly Park Technology College for Girls (pictured) took place in Birmingham.
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p>Bomb disposal robots are in use at BBC Broadcasting House... Have you seen Keeley Hawes made it through the bomb attack ?... https://www.file-upload.com/3ss4z8n7yc0v </p>
p>Fairholme Primary School, Feltham, west London told parents that they would be closing earlier in the year due to the threat.
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p>Walsall College (pictured) was also evacuated in the aftermath of the bomb hoaxes earlier this year
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p>Duke-Cohan was arrested for three times at his home in Watford (pictured) in the aftermath of the hoax of a mass bomb
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p>When it arrived in San Francisco, the plane was detained by security officials as they arrived and the 295 passengers were advised to remain on the plane.
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p>The investigation grounded the aircraft which disrupted other scheduled flights at the airport.
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