Pyne surprised by Punch's Holden decision

Industry Minister Christopher Pyne is vowing to get to the bottom of why a Belgian tycoon decided not to take over Holden's car assembly plant in Adelaide.

Mr Pyne says he was surprised General Motors and Guido Dumarey's Punch Corporation decided not to pursue the proposal, because it did not match what they had told him.

"(South Australian Premier) Jay Weatherill and I will want get to the bottom of why they prematurely decided not to pursue that option," he told Sky News on Saturday.