Moonbin, a member of the K-pop boy band Astro, has passed away at the age of 25, his record label Fantagio announced on Thursday.
"Members of Astro, fellow artists, and staff at Fantagio are deeply saddened and shocked as we mourn him," the record label said.
Mooonbin was a juvenile actor before his 2016 debut as a member of Astro. As part of the sub-unit Moonbin & Sanha, he was scheduled to perform at a concert in Busan, South Korea, next month.
According to local media, the singer's body was discovered at his residence in the Gangnam neighborhood of Seoul, and suicide is suspected. Police declined to comment.
Suicide is one of the primary causes of death among South Korean youth. The nation has the greatest suicide rate among the wealthy nations of the OECD.
Following the news of Moonbin's demise, "all idols" became a trending topic on Twitter in South Korea.
One tweet stated, "I hope all idols can pursue their dreams without experiencing heartbreak."
Moonbin's death was also the most-searched topic on China's Twitter-like social media platform Weibo on Thursday morning. Many users stated that the news reminded them of the passing of other youthful South Korean popstars in the past.
Kim Jong-hyun, the lead vocalist of the popular South Korean boy band SHINee, committed suicide in 2017 at 27.