"I have never been more sad than I am tonight," Seltzer wrote in a Facebook post.
"Rest in peace my crazy, charming, devilish, tormented, lovable and smart little brother."
Seltzer, known as Happy Tom in the Norwegian band, was a colleague of Dyvik Husby from 1993 until Husby left the band in 2009. For the past year, Seltzer and the other band members have secretly planned to celebrate the Turbonegro album "Apocalypse dudes" 25th anniversary next year.
"It was something we had looked forward to presenting to you, Chris and Pål within the next few months.
That did not happen, "writes Seltzer.
Hans-Erik Dyvik Husby turned 49 years old.
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Hans-Erik Dyvik Husby, was better known under the artist name Hank von Hell.
He portrayed Cornelis Vreeswijk in the film Cornelis from 2010. Photo: Trond Reidar Teigen, NTB / BJÖRN LARSSON ROSVALL, TT