Quebec’s anti-corruption police have launched a criminal investigation of the provincial Liberal party, prompting some Liberals to voice doubts about the continued leadership of former federal cabinet minister Pablo Rodriguez.

The Liberals are facing allegations of possible vote-buying during a leadership race earlier this year that saw Rodriguez take the reins of the party.

On Wednesday, a defiant Rodriguez told reporters he is “absolutely” staying on as leader, despite multiple investigations related to the campaign he won in June. “I was duly elected by the members,” he said. “I have nothing to reproach myself for.”