The lead investigator in the R2-billion Kusile Power Station corruption case has backtracked on his testimony that two German nationals accused in the matter will not be extradited to stand trial. On Thursday, the investigating officer continued to be cross-examined by the state. He is on the stand as a witness in an inquiry at the Middleburg Specialised Commercial Crimes Court in Mpumalanga to determine if there were any unreasonable delays in the case against former Eskom executive Matshela Koko and his co-accused. The officer cannot be named by court order. Koko and his co-accused, including his wife, Mosima; stepdaughters, Koketso Aren and Thato Choma; former SA Local Government Association CEO Thabo Mokwena; lawyer Johannes Coetzee and Watson Seswai; senior Eskom project director Hlupheka Sithole; German citizens Sunil Vip and Markus Bruegmann; Gopal Kambi; Lesetsa Mutchinya; and companies linked to some of them were charged in October last year. The investigating officer told the court during his last appearance on 1 November that he was unaware of any application for the extradition of Vip and Bruegmann.