Girls' Generation, one of the most popular South Korean pop groups, may postpone the release of its new album after footage for the video of the album's title track was accidentally deleted, the group's management agency said Friday.

The K-pop group originally planned to end a one-year hiatus with the release of its fourth mini-album titled "Mr.Mr." on Feb. 24. Before the official release, the group was scheduled to release the title track "Mr. Mr." on local online music services such as Melon, Naver Music and Genie on Wednesday.

On Thursday, the group was scheduled to resume local broadcasting activities on cable TV network Mnet's music program, "M!Countdown."

However, computer files for the song's video were found to have been recently mistakenly deleted in the post-production process, S.M. Entertainment said.

The album release may have to be delayed if the deleted files are not recovered, it said.

"The deleted scenes are important for the video, so we're now checking if any restoration of them is possible," a company official said.

"If not, we need to find ways to film the scenes again ... In that case, we may have to delay everything from the release of the title track to online services to the first TV appearance." (Yonhap News)