As per reports, Seoul Police have stated the cause of the death was suicide, 'It appears that Moonbin took his own life.

Source: https://www.ibtimes.co.in/rest-love-moonbin-astro-star-dies-suspected-suicide-25-funeral-will-be-held-quietly-says-858400

Following the news about the death of Moonbin, “all idols” trended on Twitter in South Korea.

Source: https://pmnewsnigeria.com/2023/04/20/boys-over-flowers-actor-moonbin-dies-at-25/

Moonbin debuted with six other members Cha Eun-woo, Rocky, Yoon San-ha, MJ and Jinjin under Fantagio in 2016.

Source: https://interaksyon.philstar.com/trends-spotlights/2023/04/20/248936/pinoy-fans-mourn-untimely-death-of-astro-member-moonbin/

Most recently, Moonbin has been busy working on a sub-unit project within ASTRO featuring bandmate Sanha.

Source: https://comicbook.com/anime/news/moonbin-death-astro-kpop/