MILAN, May 31 (Reuters) - Italy's Eni said onSunday an audit conducted by an independent U.S. law firm into acase involving alleged corruption relating to a big Nigerian oildeal had found no evidence of illegal conduct.
Milan prosecutors opened a probe last year into a $1.09billion acquisition of Nigeria's OPL-245 offshore oil block in2011 by Eni and Royal Dutch Shell.
Eni said in a statement the audit by the law firm, which itdid not name, was done on behalf of Eni's board of statutoryauditors and watch structure.
"(It) did not find evidence of illegal conduct in relationto Eni and Shell's 2011 transaction with the Nigerian governmentfor the acquisition of the OPL 245 license in Nigeria," Enisaid.
It said the final report of this audit had been madeavailable to the judiciary "with whom Eni is co-operating infull".
Eni has always denied any wrongdoing. (Reporting by Stephen Jewkes)