Teenager arrested after threatening emails sent to schools
Some in Greater Manchester and Cheshire received the hoax threats.
A teenager has been arrested after schools and colleges across the UK, including some in Greater Manchester and Cheshire, received threatening emails.
The National Crime Agency (NCA) said it was believed the incident was linked to a hoax bomb threat that forced hundreds of schools into lockdown last week.
An 18-year-old man was arrested by Hertfordshire Police and the NCA in Abbots Langley on Wednesday night on suspicion of making malicious communications.
A spokesman for the NCA said: "We understand these threats have caused considerable concern but we do not assess there to be an increased risk to the public.''
A 19-year-old man was arrested in Watford last Wednesday on suspicion of blackmail and making malicious communications after the mass bomb hoax