(JTA) — A cardiovascular surgeon at Boston’s Brigham and Women’s Hospital was fatally shot by a former patient’s son, who subsequently killed himself.

Dr. Michael Davidson, 44, was shot twice on Tuesday morning in an exam room at the hospital, according to the Boston Globe, and died despite emergency surgery. The shooter, Stephen Pasceri, 55, was subsequently found dead of an apparent self-inflicted gun shot.

Davidson, the director of endovascular cardiac surgery at the hospital and an assistant professor at Harvard Medical School, had treated Pasceri’s mother in the late summer of 2014. Pasceri’s siblings say that Pasceri came to blame Davidson for their mother’s subsequent death, according to the Associated Press.

Davidson, a father of three, was an active member of Temple Beth Elohim in Wellesley, Mass. His wife Terri Halperin, a plastic surgeon, is seven months pregnant with their fourth child.