PATNA, Dec. 8 -- The Rajgir Ordnance Factory in Nalanda district received a threatening email on Monday claiming that seven powerful bombs had been planted on the factory premises and in its offices, police said.

The email-reportedly sent from Tamil Nadu and carrying references to Pakistani agency ISI and Tamil Nadu's ruling party DMK-triggered an extensive search by security agencies. However, no suspicious items were found, officials said, adding that investigations are underway to trace the sender.

Senior police officers confirmed receiving the threat and launched search operations immediately. "The security was tightened, and both bomb disposal and dog squads were pressed into service. Nothing suspicious was found," said Rajgir DSP ...