Sounds like he died while Larsson was at practice.
"Just 50 years old, Robert Larsson was a fit, former NHL draft pick and Swedish professional hockey player who had arrived in Edmonton with his wife to watch their son Adam play hockey. They checked into their hotel after a transcontinental flight from Sweden, and while Adam was on the practice ice with the Edmonton Oilers, Robert went out to stretch his legs.
Minutes later, just a few blocks away inside Rogers Place arena, a coach skated over to Adam mid-practice, said very few words, and Adam was gone. His father had suffered a heart attack, and it was fatal."
Now a member of the Kraken, former Oilers defenceman Adam Larsson opened up about the sudden loss of his father over three years ago and the need to seek out a new beginning in Seattle.
www.sportsnet.ca