A contractor is threatening to stop work on a Mississippi Margaritaville Amusement Park, alleging that developers haven’t paid in months, amassing $5 million in outstanding bills, according to a federal lawsuit.

The Tindall Corp., a South Carolina-based firm with a division in Moss Point, Mississippi, is building a parking garage and a platform for rides at the Biloxi amusement park set to open in 2021, The Sun Herald reported Monday.

The company filed its lawsuit in U.S. District Court in Gulfport against Biloxi Lodging LLC, owner of Margaritaville, and the Stewart Family Trust, saying the companies stopped paying in July for work that was continuing to be performed, the newspaper said.

Margaritaville developers responded that the dispute is over how much work has been completed by Tindall, and they are currently in negotiations to resolve the issue.

Representatives for Tindall declined to comment to the Sun Herald.

Biloxi Lodging has more than $550,000 in tax liens for unpaid sales taxes from July and August 2019, the Mississippi Department of Revenue confirmed.

The $140 million project is an expansion of the existing site there and is set to include a second 300-room hotel tower and an elevated amusement park to go with a current arcade, pool and indoor playground.