TOKYO (Kyodo) -- Japan is monitoring developments in South Korea with "particular and grave" concerns, the top government spokesman said Wednesday, following the detention of President Yoon Suk Yeol over his declaration of martial law in December.

China will make every effort to rescue Chinese nationals who fell foul of scam operations luring them to countries including Myanmar, the public security ministry said late on Wednesday.

South Korea's impeached President Yoon Suk Yeol was arrested Wednesday and questioned in a criminal insurrection investigation, which he claimed to

South Korea's anti-corruption agency says impeached President Yoon Suk Yeol has been detained several hours after hundreds of the agency's investigators and police officers arrived at his presidential compound to apprehend him.

SEOUL (Reuters) -South Korean authorities investigating impeached President Yoon Suk Yeol attempted to enter his residence before dawn on Wednesday in a new bid to arrest him over insurrection accusations related to his Dec. 3 martial law declaration.

South Korea's impeached President Yoon Suk Yeol was arrested Sunday, just days after being apprehended at his home in Seoul. He faces possible imprisonment for declaring martial law last month.

Yoon, who was impeached and suspended from office in December, is the first sitting South Korean president to be arrested.

Yoon became the first sitting South Korean president to be arrested. South Korean investigators probing Yoon for alleged insurrection asked a Seoul court on Friday to extend his detention after he refused to be questioned.

South Korea's impeached President Yoon Suk Yeul refused to be questioned by investigators on Monday as part of a probe into whether he committed insurrection, as dozens of his supporters faced charges after a violent rampage at a court building.

A court in Seoul has extended the time South Korea's impeached president Yoon Suk Yeol will be detained over his botched attempt to impose martial law in the country last month. Citing concerns Yoon could destroy evidence if released,