Bryan Hagan, who fronted Heir Arrarent from 2002-2003 passed away on May 21 at 39 years of age. The cause of his death has not yet been revealed.

"He was a gentle giant and a great friend," begins the band's statement. "Bryan was slated as first choice to replace Paul Davidson for the 2012 reunion shows last January in Greece and Germany, but was unable to make the trip. We are shocked and tremendously saddened by his untimely passing," the post continues. "You will be greatly missed, my friend."

Unfortunately, Hagan was unable to perform vocal duties for Heir Apparent's European shows, where the band achieved much greater success than in the United States.