Moonbin poses on the red carpet for the 2021 Asia Artist Awards. (Photo: AP)

Mooonbin was a child actor before making his debut as a member of Astro in 2016.

He was set to appear at a concert in the southern city of Busan next month as part of sub-unit Moonbin & Sanha.

Local media reported that the singer was found dead at his home in the Gangnam district of Seoul and that suicide was suspected.

Suicide is among the leading causes of death for young people in South Korea. The country has the highest suicide rate among the OECD group of wealthy nations.