S. Korea says North's criticism of Park regrettable

South Korea on Monday voiced "deep regrets" over North Korea's criticism of President Park Geun Hye's remarks made during her just-ended state visit to China.

"It's a matter of deep regrets North Korea has used very improper expressions and language for the head of state," South Korean Unification Ministry spokesman Kim Hyung Seok told a news briefing.

"North Korea's behavior is being watched by the international community and it's so embarrassing and shameful in the eyes of the international community," Kim said.

Kim's remarks were in response to a statement, made earlier in the day, by the spokesman of the North's Committee for the Peaceful Reunification of Korea on Park's remarks on North Korea during her four-day visit to China that ended Sunday.

"Park Geun Hye let loose a whole string of provocative remarks seriously hurting the dignity and social system in the DPRK while visiting China," said the statement, carried by the Korean Central News Agency. North Korea's official name is the Democratic People's Republic of Korea.

"At the 'summit talks,' conversations, press conference and in a special lecture given at a university during her trip she persistently raised the 'nuclear issue in the north,' expressing 'concern' and 'disallowance,'" the statement said.

In a summit meeting on Thursday, Chinese President Xi Jinping and Park agreed that a nuclear North Korea is "unacceptable under any circumstances" and vowed to achieve a nuclear-free Korean Peninsula.