Sweden's NASUM have posted the following message on their official web site:

"Today — Thursday, February 17, 2005 — we recieved a confirmation that Mieszko Talarczyk [NASUM guitarist/vocalist] died in the tsunami disaster December 26, 2004. His body has been identified and will be transfered to Sweden shortly."

"His closest family and friends are in our thoughts right now. Mieszko will be missed by many."

"Nasum.com will be closed for at least a month. You know why. There will be a slight update in a couple of days with some information about the future of NASUM along with some personal words about Mieszko."

"Thanks a lot for your support and your thoughts. Now a new time begins, a time we must spend alone. Please respect this wish."

Source:blabbermouth.net