It comes after Cuomo spent months telling viewers about how important masks are – and in defiance of an official mandate issued by his NY Governor brother Andrew.

The letter was leaked just weeks after the CNN host blasted a virus-stricken President Trump as a ‘COVIDIOT’ for removing his face covering after returning to the White House from the hospital.

‘You have been observed entering and exiting the building and riding the elevator without the required face coverings,’ the letter reads.

‘Even though staff members have asked you to comply with this requirement, you have refused to do so.