Rome, February 13 - Northern League leader Roberto Maroni said Wednesday his party was taking legal action after media reports linking it to alleged corruption at Italian defence giant Finmeccanica. "Today I'll launch new legal action against that band of professional defamers," Maroni said, citing daily newspapers La Repubblica and Il Fatto Quotidiano. Finmeccanica CEO Giuseppe Orsi was arrested on Tuesday in relation to a probe into the alleged payment of bribes for the sale to the Indian government of 12 helicopters produced by AgustaWestland, which Finmeccanica controls. Orsi, who was appointed in May 2011, is considered close to the Northern League, an ally of ex-premier Silvio Berlusconi. "Orsi is not a League man," Maroni said. "He was appointed (by Berlusconi's last government) because he is good".