Neither man has been named but South Korean news agency Yonhap said they both won medals at South Korea's home Pyeongchang 2018 Olympics.

The accused is the older of the two men who has been charged with sexually harassing his fellow skater.

After the alleged incident was reported to a coach the KSU launched an investigation, but has now said it needs to gather more evidence.

Yonhap reported that the two athletes involved have given conflicting accounts of what happened.

While the investigation has been underway all 14 skaters who use the Jincheon National Training Center have been banned from using the facility for a month.

South Korean skating has become embroiled in controversy with the most serious case involving Cho Jae-beom, the former national team coach who was convicted of physically assaulting Olympic gold medallist Shim Suk-hee.

He is due to stand trial on separate charges of sexual assault with the case leading to a wider probe across sport in the country.

Another case saw Kim Gun-woo handed a one-month ban after entering the women's dormitory at Jincheon.

Kim Ye-jin, who gave him access, received a reprimand and 10 hours of community service.