SEOUL: South Korean prosecutors have questioned the wife of former president Roh Moo-hyun on suspicion of accepting $1 million from a detained businessman at the center of a high-profile corruption scandal, an official said yesterday.

Prosecutors quizzed Kwon Yang-sook on Saturday to determine whether she received the money from Park Yeon-cha, head of a local shoe manufacturer, via a former presidential aide in 2007, according to a prosecution spokesman.

Yesterday, prosecutors also summoned Roh's only son - Roh Gun-ho - to investigate whether he used some of the $1 million for living expenses in the United States, spokesman Cho Eun-suk said.