NEW DELHI: An email threat received by secretary, ministry of heavy industries warning of the use of “suicide IEDs” in Udyog Bhavan, prompted an alert on Friday afternoon, though a search mounted by the Delhi Police and CISF eventually found it to be a hoax. Udyog Bhawan is located in a high-security area of the Capital that houses Rashtrapati Bhavan, Parliament House and key Central government offices.An email dated 30.05.2025 was delivered to secretary, heavy industries, with a threatening message about the use of suicide IEDs on Udyog Bhawan premises and asking that they the building be evacuated by 3.15 pm. This prompted the ministry of heavy industries to inform the Delhi Police, which rushed its personnel and bomb disposal squad there. Sources told TOI that CISF, which secures Udyog Bhavan, was not simultaneously informed about the email and possibly learned of it when the Delhi Police arrived there.CISF eventually also received a formal letter from the ministry of heavy industries, with the threat email attached. A look at the email prima facie led the CISF to view it as part of the pattern of similar email threats received over the past couple of months warning of bomb attacks in different high-value buildings across the country, but which were later found to be a hoax. These email threats, suspected to be originating from the same IP address outside the country, have a common link – the mention of the “unjust arrest” of Tamil YouTuber Savukku Shankar, though the sender is careful to also bring in the “unjust hanging” of Parliament attack convict Afzal Guru and “custodial death” of 2G accused Shahid Balwa. Anyway, not wanting to leave anything to chance, CISF along with Delhi Police conducted a thorough search of the Udyog Bhawan premises, even though no evacuation was carried out to avoid panic among the people. After floor-by-floor search of the area, the CISF declared the premises to be safe and ruled out the presence of any IED. Similar email threats were received earlier, warning of bomb threats at the Mapusa deputy collector’s office in Goa on April 3, the Jaipur collectorate on April 4, the Taj Palace Hotel and Chhatrapati Shivaji airport terminal in Mumbai on May 17 and the Punjab and Haryana High Court premises on May 22. All were found to be a hoax.