Italy’s Economic Development Minister, Federica Guidi, has resigned amid allegations that she might have used her influence to help in the development of an oil field that would benefit her boyfriend, Gianluca Gemelli, financially, dealing a blow to the government of Prime Minister Matteo Renzi, The Wall Street Journal reported. Renzi’s government is facing a no-confidence-vote initiated by the opposition parties.

“I am absolutely sure of my good faith and that I acted correctly. But I believe it is necessary for reasons of political opportunity that I hand in my resignation,” Guidi said in a letter addressed to Renzi.

The resignation came hours after Italian investigators released wiretapped conversations in which she tells her partner that an amendment that had not yet been made public would be approved.

This amendment would help Gemelli’s engineering business win contracts with French oil giant Total in its plans to develop the Tempa Rossa oil field by not requiring permits from two Italian regions that were opposed to the oil field.

Gemelli, who is under criminal investigation on suspicion of abuse of his personal connections, as he later told Total “the good news” about the yet-not-public amendment, DW reported.