Volvo Trucks North America is on the hunt for a new chef executive after Göran Nyberg left to take a position with MAN Truck & Bus. Volvo has appointed Per Carlsson acting president.

Carlsson’s appointment is on an interim basis. The company said the recruiting process for a new North American president is already under way.

Carlsson previously was senior vice president of strategy and transformation for Volvo Trucks. He has been with Volvo Group for 33 years, inlcuding serving as the president of Volvo Trucks North America from 2008-2009 and as chief operating officer of the group’s North American truck operations from 2010-2011.

Nyberg has accepted a position with MAN Truck & Bus as the new executive board member for sales and marketing, effective Sept. 16. He had been with Volvo Group for 25 years, joining the company in 2003. Germany-based MAN is a subsidiary of Volkswagen AG.

“We intend to transform the Volkswagen Truck & Bus Group, which MAN is also a part of, into a global champion of the transportation industry," said Andreas Renschler, chairman of the Supervisory Board of MAN Truck & Bus AG and CEO of Volkswagen Truck & Bus, in a statement. "With his international expertise, Göran Nyberg will help to drive this transformation forward at MAN. We are very pleased to welcome him on board in what are exciting times for our company.”