Greater Chennai City Police said that bomb detection and disposal squads and police personnel have been sent for anti-sabotage checks at these educational institutions and action is being taken to identify the culprit who sent these e-mails.
Ram Janaki Temple in Uttar Pradesh's Kanpur received a bomb threat on Sunday, six days after the Pran Prathishtha ceremony of Ram Lalla in Ayodhya.
Several posters mentioning bomb threats were pasted on the walls and scattered on the floor of this ancient temple.
Delhi police have arrested a 25-year-old man for allegedly making a hoax bomb threat call on a Spice Jet flight from Darbhanga to Delhi earlier this week, officials said on Saturday.
The Indira Gandhi International Airport in the national capital was put on high alert after a bomb threat call was received for a Darbhanga to Delhi flight. However, during the inquiry, it turned out to be a bogus call, officials said on Wednesday.
Several museums in Mumbai, including the iconic Chhatrapati Shivaji Maharaj Museum, received threatening emails warning about bomb blasts, officials said on Friday.
Kolkata Police on Friday claimed that it received an email claiming that explosives had been planted inside the Indian Museum, one of the leading landmarks in Kolkata, and would be detonated.