India, Aug. 20 -- Over 50 schools in Delhi received bomb threat emails on Wednesday, with claims of high-yield C4 bombs being placed in their premises, days after a similar threat, which later turned out to be hoax, rattled across schools in the city.

A group that identified itself as 'Terrorisers 111 group' claimed to have planted explosives including high-yield C4 bombs and timed charges in classrooms, auditoriums, staff rooms, and school buses, according to the threat email cited by ANI.

"We are the Terrorisers 111 group. We have planted explosives inside your building, and others across the city. Devices include high-yield C4 bombs and timed charges placed in classrooms, auditoriums, staff rooms, and school buses, designed to cause ...