MCA president Ong Tee Keat today filed a RM500 million defamation suit against BN Backbenchers Club chairperson Tiong King Sing over the latter's claim of giving RM10 million to the minister.

Ong, also the transport minister, only named Tiong as the defendant. The suit was filed by his team of nine lawyers at the Kuala Lumpur High Court registry at 11.15am today.

Ong is suing Tiong, who is also the Bintulu member of parliament, in his personal capacity.

Ong's lawyer Ronnie Tan said that his client will donate the RM500 million to charity and education if he wins the case.