The gay brother of Bob Katter - the federal MP who claimed there were ‘‘no homosexuals in North Queensland’’ - has attacked his sibling’s comments on the same sex marriage debate.

Carl Katter, the half brother of politician Bob Katter, appeared on Channel Ten’s 6.30pm tonight, interviewed by veteran broadcast journalist George Negus.

Bob Katter at the marriage protest. Credit:Alex Ellinghausen

The interview came days after Bob Katter helped lead a rally in Canberra against same sex marriage.

When asked what he thought of his brother Bob’s comments that gay marriage was something to be ridiculed Mr Katter said ‘‘I honestly hadn’t heard them until now, whenever he comes on the television or news I turn the TV off.’’