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MIDTOWN MANHATTAN — Officials were investigating what was being called a “hazmat situation” at the News Corp. Building on Sixth Avenue over a letter with an unknown, white, powdery substance, according to police.

The call came it at around 11:25 a.m., and the scene remained active as of Friday afternoon.

The building, at 1211 Sixth Avenue, houses — among other operations — FOX News and its studios.

Following an investigation, officials at FOX News Media said the substance was not deemed to be hazardous.

“An envelope containing a white powdery substance was opened at FOX News Media today,” a FOX News spokesperson said. “We immediately notified the NYPD’s Hazmat unit and the FDNY, both of which responded accordingly and our offices were given an all clear after it was determined that the substance was non-hazardous. We are very grateful for their swift attention to this incident.”