BOSTON (AP) — Owners of the heavily polluted waterfront property that Wynn Resorts plans to develop into a $1.6 billion resort casino attempted to conceal the fact that a convicted felon and known mob associate was profiting from the land deal, according to federal and state grand jury indictments unsealed Thursday.

The indictments allege that Charles Lightbody, Dustin DeNunzio and Anthony Gattineri created fraudulent documents in an effort to mislead state investigators and Wynn, which won the lucrative Boston-area resort casino license in September with a plan to build a gleaming new luxury resort casino complex in Everett, a Boston suburb.