New Delhi, May 01 (ANI): After a bomb threat call at Delhi Metro on Thursday turned out to be a hoax, CISF PRO Hemendra Singh, after carrying out a thorough check inside stations and trains, said that security has been beefed up. He said that the call was received at about 10:15 AM and turns out that it was a fake call. He said that the situation is normal, however the officials are alert after the incident.