Social media is awesome. According to Twitter updates through Business Insider, it first looked like Grand Central had been evacuated and that SWAT teams were called in because there was a mysterious package… Now, it looks like an elaborate Twitter hoax. Or not. Nothing is confirmed. All in 20 minutes. Thanks internet!
UPDATE: According to the NYPD, Grand Central was evacuated at 1:36pm because of a package, but everything was deemed cool by 2:11pm. So there you go, the War on Terror is over, we won.