Even as he was set to rejoice the appointment of his man, Jagadish Shettar as chief minister of Karnataka, B S Yeddyurappa was summoned by the Central Bureau of Investigation for questioning.
Yeddyurappa has been in the CBI office since 6.30 pm even as his party discusses the appointment of a new chief minister in New Delhi.
Yeddyurappa is being questioned by the CBI in connection with the illegal mining and land de-notification case.
He is expected to be questioned till late in the night.
"It would all depend on how honest or forthcoming he is," sources said, adding, "If we need to question him further we may call him in tomorrow (on Sunday) as well."
Yeddyurappa, however, cannot be arrested as he had been granted anticipatory bail by the high court.
His two sons and son-in-law too are accused in the same cases and have been questioned earlier.
The CBI has to submit its report on this case to the Supreme Court by July 30.