K-pop solo singer Se7en And Sangchu of the group Mighty Mouth are under investigation by the South Korean military for charges they visited massage parlors where sex acts are performed, while serving on active duty.

The charges stem from footage captured for the Seoul Broadcasting System (SBS) program "Scene 21" that appeared to capture the soldiers entering the massage parlors during their time in the army.

"We are currently investigating current celebrity recruits Se7en and Sangchu entering an adult entertainment establishment after their performance," said a representative for the National Defense Media Agency in an official statement, according to the website allkpop.

"[One of the two stars] has a bad back and a bad knee, so he went to get it treated."

When asked why the other singer had visited the massage parlor known for giving out sexual release for massage clients or "happy endings," the army spokesperson had no comment.

"If these allegations turn out to be true, they will be handled accordingly within the law," the army media rep said.

The soldiers were seen leaving their hotel at 10 p.m. on Friday, dressed in civilian clothes, already a breach of military protocol, according to the publication Soompi.

The SBS "Scene 21" camera crew asked one of the massage parlor employees what the pop stars-turned soldiers were up to in the illicit massage parlor.

"They said that they didn't have enough time and just left without getting a massage after getting their money back," the employee said.

When the singers saw they were being filmed, they tried to grab the cameras out of the film crew's hands.

"We're not doing anything wrong," one of the stars said.

"It's four in the morning right now, are you a soldier or are you a celebrity?" one of the cameramen shot back.

"You visited [one] massage parlor and then proceeded to go to [another] massage parlor. Do you have anything to say?"

The singers stuck to their stories.

"We swear that we have not done anything illegal," one of the celebrity soldiers said.

SBS reporter John Kim believes the stars got what was coming to them.

"The reality of the celebrity recruits," Kim tweeted on Tuesday. "They're saying that they're worried that reporters would write articles after getting angry that they were hit while investigating. Sigh. I wonder if he knew that this was an exclusive and that he was being used...if he didn't, he's an idiot."

Watch the SBS footage of Sangchu Of Mighty Mouth and Se7en visiting massage parlors while serving in the South Korean army RIGHT HERE