Mary Mara, who appeared on television shows including “Ray Donovan,” “Dexter” and “ER” in an acting career that spanned more than 30 years, has died in what New York authorities said appeared to be a drowning accident.

The New York State Police said Monday a woman identified as Mara, 61, was found shortly after 8 a.m. Sunday in the St. Lawrence River near Cape Vincent, in upstate New York close to the Canadian border.