Rome, Jumada II 22, 1437, March 31, 2016, SPA -- Italy's industry minister Federica Guidi resigned from office on Thursday amid suggestions that her partner had exploited her position to influence parliamentary activity in a way that would advance his business interests, according to dpa. "I am absolutely certain of my good faith and decency of my work. However, I think it is necessary, for the sake of political convenience, to hand in my resignation as minister," Guidi wrote in a public letter to Prime Minister Matteo Renzi. Earlier Thursday, it was revealed that Guidi's partner Gianluca Gemelli had been placed under investigation by prosecutors in Potenza, southern Italy, for influence peddling, as part of a probe that led to the arrest of six other people. --SPA 22:17 LOCAL TIME 19:17 GMT www.spa.gov.sa/w