MyFoxNY is reporting that a man has been burned and 700 people evacuated in a chemical explosion at Fox News' sixth avenue offices. From NYPost:

''Firefighters responded to a chemical explosion that erupted at 10:39 a.m. in a mechanic room this morning on the 45th floor of a midtown highrise.

''The incident at 1211 Sixth Avenue left one man injured who was treated at the scene. Fire spokesman Jim Long says: 'We have some sort of reaction between two chemicals that caused a slight explosion.' It was unclear what type of chemical was involved.''