The U.S. Inspector General is keeping a watchful eye on Department of the Interior (DOI) amid allegations that Las Vegas-based MGM Resorts has swayed the agency to sit on the proposed $300 million East Windsor casino project of Mashantucket Pequot and Mohegan tribes.

According to a Hartford Courant report, the interior department’s watchdog had been sniffing for clues since mid-February to determine whether it colluded with MGM Resorts to delay Connecticut’s satellite casino project.

DOI Inspector General spokesperson Nancy DiPaolo told local reporters that the investigation stemmed from the request of four Connecticut lawmakers, who all wanted to know the truth behind the department’s inaction on the two tribes’ joint casino venture.

DiPaolo admitted that it could take “months” before they conclude their investigation.