He was taken from the Ampang Jaya police station, where he had surrendered himself earlier Monday, in an unmarked police car with escorts.
He was not seen to be handcuffed and is believed to be on the way to the Selangor police headquarters in Shah Alam.
In Lahad Datu, Sabah Commissioner of Police Datuk Hamza Taib told reporters that Ridhwan was arrested to facilitate investigations pertaining to the Sulu intrusion and could be detained up to 29 days.
Earlier Monday, Ridhwan told reporters that he did not know the self-styled Sulu Sultan Jamalul Kiram III, the man behind the group of armed Sulu intruders who entered Sabah in February with the aim of reclaiming it.
However, Ridhwan admitted giving money to another claimant to the Sulu throne, Sultan Muedzul Lail Tan Kiram.
On Sunday, Sabah Police Commissioner Datuk Hamza Taib said they were looking to contact one Muhammad Ridhwan from George Town in connection with their investigations into funding of the intrusion.
According to sources, it is believed that several other Malaysians were also being investigated for funding the Sulu militants who entered Kampung Tanduo before security forces began flushing them out on March 5.
Ridhwan was supposed to give his statement at the Dang Wangi police station but changed the location at the last minute.
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