NASSAU, Bahamas (AP) — Dozens of Chinese construction workers employed at a multibillion-dollar resort project in the Bahamas have launched a protest in an apparent dispute over wages.

The workers are employed by China Construction America, which is developing the $3.5 billion Baha Mar hotel-and-casino project in the capital of Nassau.

A group of roughly 50 workers walked several miles from their work site to the Chinese Embassy on Wednesday wearing hard hats and demanded to meet with officials. Police officers blocked the entrance to the embassy for several hours.

Baha Mar officials say in a statement that they are supporting an internal investigation to understand workers’ concerns.

Baha Mar is a sprawling 1,000-acre (405-hectare) resort scheduled to open in December.