The actress was recently diagnosed with stomach cancer.

YONHAP/EPA-EFE/Shutterstock

Lee Joo-Sil, an actress known forSquid GameandTrain to Busan, died Sunday at the age of 81.

Lee’s agency, 1230Culture, told the newspaper she was diagnosed with stomach cancer three months ago.

This file photo shows South Korean actress Lee Joo-shil, who most recently appeared in Netflix’s global hit ‘Squid Game,’ attending the preview of her movie ‘Notebook From My Mother’ in Seoul, South Korea, 09 March 2018

Lee Joo-Sil.Credit:YONHAP/EPA-EFE/Shutterstock

1230Culture didn’t immediately respond toEntertainment Weekly’s request for comment.

I overcame it well because I have children," she reportedly said at the time.

“Everyone becomes stronger when faced with a crisis, added Lee.

Lee Joo-Sil in Squid Games Season 2

Lee Joo-Sil in season 2 of ‘Squid Game’.Netflix

If you let everything go, you become helpless.

I was grateful for that kind of thinking.”

Lee also starred in 2016’sTrain to Busan, playing the mother of protagonist Seok-Woo (Gong Yoo).

A funeral service will be held Wednesday in Sinchon, Seoul.