K-pop singer Lee Jihan died in Halloween disaster in South Korea

Lee Jihan, a 24-year-old South Korean actor-singer, was one of 154 people killed in a fatal Halloween crowd spike in Itaewon, Seoul, on Saturday.

Lee died as a consequence of the crowd in the city's narrow streets, which seriously injured more than 100 people, according to Billboard, referencing the star's agencies, 935 Entertainment and 9Ato Entertainment.

Lee's tragic passing was also addressed by 935 Entertainment on Instagram on Sunday, along with a picture of a plain black square shared in sorrow.

"I am heartbroken to [share] sad news," the translation for the caption said before going on to say that Lee "has become a star in the sky and left us" after his "sudden death."

"Actor Lee Jihan was a sweet and warm friend to all," the caption added.

"We are sad to deliver such news today, but Lee Jihan has passed away in the crush in Itaewon last night," a statement from 935 Entertainment read, according to Entertainment Tonight, citing multiple outlets.

They added, "We would like to express our deepest condolences to his family, who are saddened by the sudden tragic news, also to everyone who loved him."

Lee gained notoriety for participating in Produce 101's second season of a reality singing competition.