Two dead bodies of South Korean civilians on an island hit by artillery shells the Democratic People's Republic of Korea (DPRK) fired a day ago, Seoul's YTN television reported Wednesday.

The two men, reportedly in their 60s, worked on a construction site on the Yeonpyeong Island that came under a surprising artillery attack Tuesday by the DPRK, according to YTN.

TV footage Tuesday saw flumes of smoke coming out of the island with some buildings set on fire. Residents shortly evacuated to shelters.

Two South Korean marines were also killed Tuesday, and 16 injured.