Birmingham City co-owner David Sullivan has launched an extraordinary attack on his own board of directors over their silence following the Dwight Yorke race row saga.

Mr Sullivan said he still had a "sour taste in the mouth" over the lack of support he received from the boardroom after he accused Yorke of "over-reacting" when he was racially abused by a handful of Blackburn Rovers supporters.

The outspoken Blues boss sparked outrage among black players last year when he said the incident - which involved Yorke being targeted with monkey chants - was blown out of all proportion.

Sullivan acknowledged that his fellow directors, particularly co-chairman David Gold, had defended him by saying that he was not a racist.

However, the multimillionaire, speaking in an exclusive interview at the Essex mansion where he conducts his business affairs, told The Birmingham Postthat the directors did not go far enough.

He said: "I still have a very sour taste in my mouth about the Dwight Yorke thing.

"Everyone, I mean the directors, said 'We do not think you are a racist', but no one said 'I agree with him'.

"They all said to me that I said the truth. But all that was said publicly was 'David is not a racist', none of them said it was the truth."

Sullivan, who recently criticised Yorke's performances for Blues, said his remarks were directed towards the Blues directors.

Four men were convicted of racially taunting the former Aston Villa striker during the 3-3 draw at Blackburn's Ewood Park ground last November.

Speaking about Sullivan after the storm, Gold said: "I've known David for 25 years and never heard a racist comment from him in that time. I don't believe for one moment that he is racist."

Yorke finally left Birmingham City yesterday after signing a two-year deal with Australian team Sydney FC.