SEOUL — The head of a defector activist group said Wednesday that his organization will go forward with its plan to send leaflets and copies of The Interview to North Korea if it doesn’t apologize for the ROKS Cheonan sinking by Thursday.

Thursday will mark the fifth anniversary of the sinking, which a team of international investigators blamed on a North Korean torpedo.

“If they don’t apologize until the day (of the fifth anniversary) of the attack, we will send the prepared leaflets, DVDs and USB sticks (of The Interview),” Park Sang-hak of Fighters for a Free North Korea