Wynn Resorts cleared of 'suspicion' over Macau university donation

US federal investigators have finished looking into a US$135 million donation casino giant Wynn Resorts gave to a university in Macau, and say there is nothing suspicious about the gift.

The Securities and Exchange Commission was not pursuing enforcement action against the company, assistant director of the commission's Salt Lake regional office Karen Martinez said.

Speaking from his boat on the Spanish island of Ibiza on Monday, the company's CEO, Steve Wynn, said he never had any doubt federal investigators would clear the company.

"We were so sanguine that we never paid any attention to it; we had no exposure. It was a non-event except for the damn newspapers," he said.

The six-month federal investigation has its origins in an ongoing battle between former friends and business partners Kazuo Okada and Wynn. Okada used to be Wynn Resorts' single largest shareholder, but the company forcibly bought back his shares after it said it found that Okada made improper payments to overseas gambling regulators.

The two traded accusations of unethical or illegal conduct during an extended legal, and seemingly personal, dispute.