The bodies were discovered after a neighbour found human bones while clearing up Hilschenz parents' garage in Brieskow-Finkenheerd, in Brandenburg state.

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The 1, 200 workers make up the entire workforce of the factory, which is located in the state of Brandenburg.

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This week, separately, the Christian Democrat justice minister in the state of Brandenburg resigned after a tale of fishy property deals while he was an official in Mr Kohl's government.

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The city of Berlin and the state of Brandenburg are the main parties involved in the construction of the airport, with the German federal government also footing part of the bill.

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Speaking at a news conference in Berlin Monday, Wowereit said he would hand over his duties as head of the project's supervisory board to Matthias Platzeck, the governor of the state of Brandenburg.

CNN: STORY HIGHLIGHTS

So the Bundesrat's chairman, Klaus Wowereit, a Social Democrat, asked Manfred Stolpe, Brandenburg's Social Democratic premier, to clarify his state's position.

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