YG Entertainment explained, "On February 27, movie media portal site Max Movie revealed information on the actors' personal background in which we went ahead and requested that the information be removed from the message boards upon review.  Also, we took immediate action following the incident in order to block further leakages into other media outlets, portals, and blogs."

They continued, "It appears a complaint was filed through a netizen who happened to share the article, which heightened the issue even more.  We apologize once again to fans for the inconvenience and will do all that we can to take responsibility for such actions."

Also, "In regards to Kang Dong Won's great grandfather, we are unable to disclose any information as we are still in the confirmation process. We sincerely apologize for the alarm once again."

Meanwhile, netizens were shocked when they discovered actor Kang Dong Won's pro-Japanese ancestral history.

SEE ALSO: 'Running Man' welcomes Ji Ye Eun as a fixed member