Loudwire reports: "He was found unresponsive and on the floor of a hotel room at Raffaello Hotel at 2:50 p.m. on Saturday, according to the Cook County medical examiner's office." Read their report here

Weezer writes on their website "our beautiful, creative, hilarious and sweet friend Mikey Welsh has passed away at the very young age of 40. A unique talent, a deeply loving friend and father, and a great artist is gone, but we will never forget him. His chapter in the weezer story ('98 - '01) was vital, essential, wild, and amazing.

"Mikey was never one to shy away from the absurd, dangerous or strange, and he did so with a gusto few others had. No one had quite the stage presence of Mikey, nor have there been many who pulled the types of shenanigans he did at shows. If it rocked, he had to try it - and he always found a way to pull it off.

"When he emerged from his nervous breakdown that spelled his exit from the rock n roll world, he took on a new role as an astonishing and pure visual artist. It was a glorious flowering of a talent he always possessed, but he had chosen to rock out first, paint later.