New Delhi: Security at Indira Gandhi International Airport has been beefed up following a bomb blast threat received by Delhi Police. Delhi Police has received threats through e-mail that the terror outfit is plotting an attack on al-Qaeda airport. IGI Airport said in an official statement that additional alerts have been issued after receiving the email and all security measures have been beefed up. On Saturday, the IGI police station informed the Airport Operation Control Centre about an email received by the al-Qaeda chief about the bomb blast threat, the airport said in a statement. ''It said Karanbir Suri alias Mohammad Jalal and his wife Shaili Shara alias Hasina are arriving in India from Singapore on Sunday. They are planning to plant bombs at the airport in one to three days.'' "After examining the email, the DIG said that threatening messages were received in recent times along with the same names and such information," the statement said. Which was declared non-specific by the Bomb Threat Assessment Committee. Delhi Airport said that as per the rules, the Security Operations Control Centre has informed all concerned agencies and alerted the security forces. The anti-sabotage investigation has been conducted at all terminals of the airport. In addition, checking and patrolling of vehicles has been increased at all entry points. BJP to hold more than 100 programmes over next six months, Here's Why Abhishek Banerjee says he will continue fighting till last drop of blood before coming to Tripura Saudi Arabia to reopen Umrah pilgrimage to abroad pilgrims starting Aug 9:Reports