The billionaire Republican front-runner’s campaign said Monday it was planning to file a formal complaint with the Republican National Committee contesting how Louisiana will allocate its delegates. In a further sign of the possible battles yet to be fought over delegates, Trump hired veteran strategist Paul Manafort, who helped manage the convention fight for President Gerald Ford during the contested 1976 Republican convention, the New York Times reported.

Barry Bennett, a Trump campaign adviser on delegate strategy, confirmed to Bloomberg Politics that Trump’s legal team would soon file its formal complaint over 10 Louisiana delegates. Trump won the March 5 primary in Louisiana with more than 41 percent of the vote, but state rules could end up giving rival Senator Ted Cruz of Texas more delegates.

“We’re going to be very aggressive protecting the integrity of the vote,” Bennett said. “We are not going to tolerate shenanigans and we’ll fight them with every tool we can come up with.”