When the online rumor mill started churning at full speed last earlier this month, with allegations that South Korean actress and singer IU was planning to marry Super Junior's Eunhyuk in October, executives from the diva's record label were not amused.

On Monday, a representative for IU's label Loen Entertainment announced that the company would be working with South Korean authorities to find who started the rumor and to pursue legal action against them.

"Firstly, we would like to say how sad we are that such an unfounded false rumor can spread so easily," said a Loen Entertainment rep. 

"We plan to involve the police to investigate and take legal actions against the person who started this rumor, as well as those that helped in spreading it."

Loen Entertainment executives, who reportedly believe the rumor originated though online instant messages, told TV Report on Monday that if IU actually were getting married, they wouldn't feel the need to keep it a secret.

"We don't know how to just laugh this rumor off," a Loen Entertainment representative said.

"It's absolutely ridiculous...when it is time for IU to get married, we will make an official announcement. There is no reason to hide."

Fan Jaejoongie thinks Loen Entertainment should release the culprit's identity for the world to see.

"Reveal the sorry person who was responsible," Jaejoongie commented on the website Soompi on Thursday.

"People need to learn that saying untrue things on the Internet is really bad!"

According to Soompi, IU and Eunhyuk engagement rumor began on the website Asia Today, where an article mentioning it has since been deleted.

Yet, Loen Entertainment execs don't appear to be anywhere close to satisfied, vowing to also take legal action against anyone making negative comments about the record label or any of the artists in their roster.

"We will also be investigating those that continue to make vulgar and negative comments about IU online," the label rep added. 

"We plan to stop those people that make hurtful false rumors. We ask all of you that for IU's sake, please stop making up more rumors. We would like to apologize to our fans for causing unnecessary worries and we hope to update you with good news. Thank you."

Reader Miloken feels the record label might be getting a bit carried away.

"If every rumor would get legal actions, lawyers in South Korea would be millionaires," Miloken wrote.