Ellefson broke the tragic news to fans with the following posting on Monday: "With much sadness, my brother Eliot Gordon Ellefson went home to see the Lord today after a two year battle with cancer. We love El, you will be missed so much."

The band issued the following statement on Wednesday: "Megadeth has canceled immediate tour plans as bassist David Ellefson and his family mourn the loss of his brother, who passed away on May 19, in Minneapolis, Minn. after battling cancer.

"A private family funeral service will be held. The band sends their deepest condolences and prayers to David during this time and ask that the fans please do the same."