South Korea's foreign ministry summoned the Japanese ambassador on Saturday to lodge a complaint about recent remarks by another Japanese diplomat regarding South Korean President Moon Jae-in.
These comments about the president, according to broadcaster JTBC, were of a sexually inapproporiate nature, and were made last week to a JTBC reporter by Hirohisa Soma, a senior diplomat stationed at the Japanese embassy in Seoul.
The foreign ministry said Vice Foreign Minister Choi Jong-kun filed a "stern complaint" with Japanese Ambassador Koichi Aiboshi.
Choi said the comments were "undiplomatic and rude" and asked that they not be repeated.
Ambassador Aiboshi reportedly expressed regret over Soma's remarks and said he would relay the demand to Tokyo.