SEOUL, South Korea (AP) - Prosecutors questioned former South Korean President Roh Moo-hyun’s elder brother Monday over allegations that he influenced the sale of an ailing securities firm to a state-supervised bank.

Roh Gun-pyeong, 66, is suspected of accepting money for helping the financial firm Sejong Capital sell its subsidiary Sejong Securities to the National Agricultural Cooperative Federation, known as Nonghyup, in 2006 when his brother was president.

The elder Roh has denied the allegations, and the ex-president is not believed to be involved.

Nonghyup is South Korea’s largest farmers’ cooperative and offers banking services. The organization is independent, but under South Korean law, the government has oversight over it.

Prosecution spokesman Oh Se-jin said Roh was being questioned Monday. He declined to discuss details.

Media reports say the chief of Sejong Capital, Hong Ki-ok, allegedly sought Roh Gun-pyeong’s help in securing the buyout because he was close to the head of Nonghyup.

Hong allegedly gave about 3 billion won ($2 million) to two intermediaries, and part of the money is believed to have gone to Roh Gun-pyeong, reports said.

Hong and the two brokers have been arrested in connection with the scandal.