More than 400 schools in England have received a hoax email threatening to detonate a bomb on school grounds if money is not handed over, police said.

A number of schools were evacuated after receiving the emails, which demanded cash from them.

Humberside Police said counter-terrorism colleagues had advised that the threats were not "credible".

Schools in London, Manchester and North Yorkshire were among those that received the email.

Police forces in Cumbria, Cambridgeshire, Humberside, Hertfordshire, Lincolnshire, Derbyshire, Avon and Somerset and Northumbria Police also issued statements saying schools and colleges in their areas had been targeted.

In Humberside, 19 schools reported receiving the threat.

Humberside's Det Supt Tony Cockerill said: "We have spoken to all schools who have contacted us, reassured them that there is no need to evacuate and offered them security advice."

Greater Manchester Police's Assistant Chief Constable Vanessa Jardine said she understood parents and the general public would be very concerned, adding: "I want to assure you that we are working closely with all of the schools to ensure the...read more at BBC