Menza, who was 51 years old, reportedly collapsed during the third song of his set of a massive heart attack. He was pronounced dead upon arrival at the hospital.
"It appeared to be a seizure but [Nick] stopped breathing," recollected a witness present at the show. "Two patrons took over and began CPR until EMS arrived. EMS worked on him for 25-plus minutes, including adrenaline shots, three shocks and non-stop compressions."
Many have expressed shock at the sudden death of the lively Menza, who was still touring in his fifties.
"We ask for prayers for Nick's family, his family, and especially his two sons and their mother, Teri," lamented biographer and friend of Menza, J. Marshall Craig. "He just spent nearly two weeks with the boys in the Pacific Northwest and was absolutely glowing."
Thousands have taken to social media to mourn the death of the popular drummer.
"We lost an amazing talent and fantastic person yesterday. Nick Menza was the nicest and most sincere guy you should ever hope to meet," posted Allen Hall, a friend of Menza, on Facebook. "He would take the shirt off his back to help you if you needed it. He had a passion for artwork, not just metal music."
"Nick, you were taken too soon, it must have been a mistake, the world was a better place with you in it. I will miss you dearly my friend," continued Hall.