The initial findings from singer Wheesung’s autopsy have come back with an “undetermined cause of death.” On the 12th, the National Forensic Service (NFS) delivered the preliminary verbal opinion of “cause of death unknown” to the Seoul Gwangjin Police Station.

K-Pop singer Wheesung has been found dead at their home, leaving fans devastated. The star, formerly known as Choi Whee-sung, was found dead at his home in Seoul on Monday. Police have launched an investigation into the cause of his death.

Wheesung was due to perform at a joint concert with fellow South Korean singer KCM on Saturday; the event has now been canceled. KCM posted a photo of a white flower on his Instagram once the news broke,