PINEHURST, N.C. — No evidence was found that Phil Mickelson was involved in questionable stock trading in shares of Clorox, multiple sources told The New York Times.

Mickelson remains under investigation over well-timed trades involving Dean Foods stock that netted him nearly $1 million, according to New York Times sources.

“I’ll continue to say, I haven’t done anything wrong,” Mickelson said after shooting a 70 in the first round of the U.S. Open on Thursday. “I’m willing to help out, love to help out any way on the investigation. So like I said before, with an investigation going on, I’m not going to comment any further on it. But I’ll continue to say that I’ve done absolutely nothing wrong.’’

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For only the second time, golf’s oldest major championship will be played in Northern Ireland when the British Open returns to Royal Portrush Golf Club in 2019.

Media reports from Ireland and the United Kingdom said the Royal & Ancient will make the formal announcement Monday. The R&A denied reports about a return to Portrush last summer, saying the course was championship-caliber but questioning whether the infrastructure could accommodate the event’s big galleries.

There was speculation that R&A officials may have changed their minds after Ted Bishop, president of the PGA of America, said last November that his group was interested in Portrush as a venue for the PGA Championship if the event was to be held outside the U.S. The earliest date that might happen would be 2020.