Seoul, March 14 -- A K-pop star has quit after admitting he watched illicit sex videos received from another artist, his agency said Thursday, the third singer to be engulfed in a scandal sweeping South Korea's music industry.

Yong Jun-hyung, 29, who is a member of boy band Highlight -- formerly known as Beast -- said he watched a video of singer Jung Joon-young having sex with women taken without their consent.

Jung, 30, was questioned by police on Thursday after admitting he shared the footage with other men, including mega K-pop star Seungri, who is also embroiled in a sex-for-investment criminal investigation.

Both Seungri -- a member of boy band BIGBANG -- and Jung, announced their retirement from show business earlier this week....