There has been no official cause of death given as of yet. Boogaard was known as one of the NHL's better enforcers, but he was referred to as a kind person and a good teammate off the ice. Rangers defenseman Michael Del Zotto called Boogaard "an amazing friend and teammate," and Phoenix Coyotes enforcer Paul Bissonnette said he was "pure nails on the ice and an even better person off."
Boogaard was also known for his charity work, creating Boogaard's Booguardians during his time with the Rangers, an organization which hosted members of the military and their families at Rangers games.
Boogaard also made frequent appearances with the Garden of Dreams, a charity organization associated with Madison Square Garden. He was loved by all his teammates, and was coming off a season in which he scored his first goal since his rookie season.
R.I.P. Derek Boogaard, you will be missed.