The goalie's sister-in-law made the announcement Thursday during her show on a Montreal-area radio station. Veronique Cloutier, whose sister Stephanie is married to Theodore, did not give details.
"We are aware of the heartbreaking news," Capitals general manager George McPhee said in a statement. "At this time we ask that everyone respects the privacy of Jose and his family."
Theodore and Stephanie Cloutier also have a 3-year-old daughter, Romy.