Last night, the hockey community was shocked to learn about the sudden tragic passing of longtime NHL goaltender Greg Millen, who unexpectedly passed away at the age of 67-years-old.

The NHL alumni made a heartbreaking post on social media revealing that Greg Millen has unfortunately passed away.

In a announcement on social media, it was revealed that Millen is leaving behind his wife, and four kids.

Greg Millen Unexpected Passes Away

It is with heavy hearts we share the sudden passing of Greg Millen today. He played 14 seasons between the pipes in the National Hockey League for six teams: the Pittsburgh Penguins, Hartford Whalers, St. Louis Blues, Quebec Nordiques, Chicago Blackhawks, and Detroit Red Wings. Over his NHL career, Millen appeared in more than 600 regular-season games.

Multiple NHL insiders and reporters quickly took to social media to express their condonelnces and show their respect for the longtime goaltender.

Wow. Awful news. Greg was a true gentleman. Thinking of the Millen family and all of his friends. Said DailyFaceoff'sFrank Seravalli
This is just gutting. A good man gone far too soon. Said TSN's Chris Johnston
Awful day for everyone who worked with Greg. Loved hockey and his role in it.

The only thing he loved more was his growing family: wife, children and, now, grandchildren. Very, very sorry for their loss Said Sportsnet's Elliotte Friedman

Everyone here at Bruins Insider is sending their thoughts and prayers to the Millen family, friends, and every effected by this heartbreaking news.

Rest in Peace, Greg.