Rudi and his golf trainer Deviardi, from whom Rudi received the money, were arrested after caught red handed by the Corruption Eradication Commission (KPK) earlier this month.
Simon, who Devi Ardi said, provided the money, was also arrested later on charge of bribing Rudi via Devi Ardi.
Simon`s lawyer Junimart Girsang said his client is ready to name other companies involved the bribery case .
"Simon wants me to ask KPK to be objective in handling the case. KPK should not continue to attack only Kernel Oil. Other companies should also be involved," Junimart said here on Monday.
He said Widodo Ratanachaithong, the director Kernel Oil Pte Ltd of Singapore asked Simon to give US$300,000 to Devi Ardi.
The money was believed to have been part of the bribe money received by Rudi.
Rudi received US$400,000 more money from Devi Ardi the night they were arrested by KPK at Rudi`s house in Jakarta.
Last week Junimart said the total of US$700,000 given by Kernel Oil via Devi Ardi belonged to Devi Ardi, who entrusted the money earlier to Widodo when they met in Singapore.
Devi Ardi asked Widodo to keep the money for him in Singapore as it would be difficult for him to bring that much cash to Indonesia, Junimart said, quoting his client as telling him.
According to Widodo Kernel Oil had nothing to do with bribing Rudi as the money all belonged to Devi Ardi.
Widodo via Kernel Oil only returned the money as asked by Devi Ardi, Junimart said.