Rockefeller Foundation ex-boss James Nyoro has denied claims that the organisation was involved in the introduction of genetic food in Africa.

The Kiambu governor aspirant said his rivals are spreading rumours against him. He said Rockefeller was not involved in genetically modified foods and through UN former secretary general Kofi Annan refused to introduce the technology in Africa.

"In 2006, there was a declaration in Abuja that it was time for Africa to go green revolution," said Nyoro. Rockefeller, under Annan, said they would start an organisation called Alliance for the Green Revolution in Africa (Agra).

Melinda Gates Foundation is a co-founder of Agra and does not deal with GMO but conventional breeding. It carries out research and trains people. Nyoro was addressing a meeting at the St Francis of Assisi Catholic Church in Limuru on Monday.