The Korean action film "Assassination", which features colonial-era assassination attempts by Korean independence fighters, drew more than 6 million viewers in 11 days since its opening, box-office data showed Sunday.

Since its release on July 22, the film was watched by 6,005,639 viewers as of Saturday, including a daily viewer count of 585,705 registered on that day, according to the data by the Korea Film Council.

The feat makes "Assassination" the first South Korean film this year to surpass the 6 million viewer mark in the shortest time since its release.

In the film "Assassination" (Showbox)

It's about the same speed as director Choi Dong-hoon's previous movie, "The Thieves," in 2012.

The favorable outcome is also likely to help cement Choi's position as the second-ever film director who has achieved the feat of drawing more than 10 million viewers for two successive movies in South Korea.

Previously, director Yoon Je-kyoon achieved the title with his movies, "Tidal Wave" and "Ode to My Father."

Set in Shanghai and Seoul in the 1930s when Korea was a colony of Japan, the star-studded film by Choi depicts three Korean independence fighters teaming up to assassinate the commander of the Japanese troops in Korea and a Korean business tycoon with ties to Japan.

Among the actors in the leading roles are Jun Ji-hyun, Lee Jung-jae and Ha Jung-woo. (Yonhap)