Spectrum's Kim Dong Yoon (20)�of 'MIXNINE' fame has passed away.

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His agency WYNN Entertainment�relayed the tragic news on July 27, but no further details surrounding Kim Dong Yoon's sudden passing have been revealed. The label stated, "The bereaved family, Spectrum members, and WYNN Entertainment family are all grieving the deceased, who so suddenly passed. The funeral will be held quietly according to the will of the bereaved family."

Condolences to Kim Dong Yoon's family, friends, and fans.�