Turkey’s Competition Board had opened an investigation into 19 of the country’s largest auto companies, including foreign firms, for alleged price-fixing since 2006, it said on Wednesday.

The board said the companies had been sharing targets, stock information and sales and pricing strategies, Reuters reported.

The board is eyeing automakers including Daihatsu Turkey, Dogus Otomotiv, General Motors Turkey, Honda Turkey, Hyundai Assan, Karson Otomotiv and Tofas, a joint venture between Italy’s Fiat and Koc Holding, it said.

Other firms being probed are the Turkish units of Mercedes Benz, Nissan and Peugeot, as well as Toyota, which makes cars with Turkey’s Sabanci Holding, the watchdog added.

A source at Tofas who declined to be named told Reuters company officials had discussed the issue.