The Incheon Development and Tourism Committee announced today that K-pop trio JYJ, the official ambassadors for the 2014 Incheon Asia Games, will not perform at the Incheon Korea Music Wave 2013 concert due to conflicts between management companies.

"Our city has discussed with the related agency about JYJ's appearance on the event," read a Twitter post from the Incheon Korea Music Wave 2013 organizers on Tuesday.

"Unfortunately, JYJ couldn't join this time due to conflict of interest between entertainment management companies. We plan to have JYJ included in the future events hosted by the 2014 Incheon Asian Games Organizing Committee and its overseas promotions."

Earlier this month, Song Young Gil, the mayor of the city of Incheon, tweeted that as much as he would like JYJ to perform, South Korea's Munhwa Broadcasting Corporation (MBC) has control over who performs at Incheon Korea Music Wave 2013.

"I also want JYJ to perform, but I heard from the Development and Tourism Committee that the lineup is decided by MBC, who are the producers," Song wrote on August 7.

The mayor promised to look into JYJ's exclusion from the event, which is being held at the at Incheon Munhak World Cup Stadium in Incheon, South Korea on September 1, with the Development and Tourism Committee and the Asian Games Organizing Committee.

The bill at Incheon Korea Music Wave 2013 is a virtual who's who of K-pop boy bands and girl groups, with 20 acts including 2AM, A-JAX, B.A.P, BTOB, EXO, F.T. Island, miss A, ZE:A, Girl's Day, BTS, BEAST, Boyfriend, Girls' Generation, Super Junior, SECRET, SISTAR, MBLAQ, KARA, T-ara, and TEEN TOP.

On August 6, a representative from JYJ's record label C-JeS Entertainment remained optimistic that the Tourism Committee would change their mind.

"Instead of making rash decisions, we'll be waiting for the organizing committee's final position," the C-JeS rep said.

"We have recently made a formal objection on the matter. The committee had misunderstood because the Incheon Development had told them and Tourism Committee that JYJ had rejected the offer. We straightened out misunderstandings and said that we were never even asked."

The rep pointed out the fact that the Incheon Development and Tourism Committee is planning on rolling out a major promotional campaign featuring JYJ in September.