The DNA believed that between 2007 and 2008 Popescu-Tariceanu received a bribe from an Austrian company in exchange for concluding additional contracts, the media outlet reported.
The prosecutors had filed a request for a criminal prosecution against Popescu-Tariceanu to investigate the alleged bribery.
Popescu-Tariceanu wrote on Facebook Wednesday that he had not received the official notification of being a participant in criminal proceedings. Talking to reporters, he added that the alleged proceedings were the reaction to his struggle against power abuse in the justice system.
Popescu-Tariceanu served as the prime minister of Romania between 2004-2008.
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