His former team, the Pittsburgh Penguins, released an official statement.
Penguins Release Statement After Johnson's Death
Johnson played 13 NHL games in his career, all with the Penguins.
His former organization released the following statement:
The Pittsburgh Penguins join the entire hockey world in mourning the loss of Adam Johnson, whose life tragically ended far too soon. We offer our deepest condolences to Adam's family and friends, as well as all of Adam's past and present teammates and coaches. Adam will always be a part of the Penguins family. It was our honor to watch him fulfill his dream of playing in the National Hockey League.