This is reported by TMZ with reference to the close ones of the actor.
The exact cause of death of the actor is not named, but it is noted that recently he was struggling with a cancer diagnosed in him.
Garson has starred in a number of famous TV series: "White Collar", "Quantum Leap", "Supergirl", etc.
However, he is best known for his role as Stanford Blatch in the TV series Sex and the City.
Earlier it was reported that the American actress and producer Mark Post died at the age of 70.