Nairobi, Sept. 3 -- A former athlete, his wife and a former assistant minister Stephen Tarus are fighting NCBA Bank over a planned Sh520 million auction in a dispute that tests the matrimonial law and loan guarantee rules.

The bank wants to auction Mr Tarus' home in Karen, Nairobi, and a building in Eldoret town belonging to Sammy Kipketer after an investor who the two had guaranteed defaulted on the loan which has since ballooned to more than half a billion shillings.

And now, Mr Kipketer's wife - Beatrice Jeruto - has joined the court fight claiming that the two-storey office block which was used as security for the loan without her consent is a matrimonial asset.

She has also disowned a signature and a national ID card attached to the...