A construction worker died after sustaining injuries at the Wynn Boston Harbor construction site in Everett on Tuesday.

The Middlesex District Attorney's office said that at 3 p.m. on Tuesday the Everett Fire Department responded to the Wynn construction site in Everett for reports of an 56-year-old unresponsive male. The worker had been operating an excavator at the south end of the construction site, taking apart a trench box when the incident occurred, the DA's office said.

The man reportedly regained consciousness at the scene before being transported to Massachusetts General Hospital where he later died. The DA said that the case has been sent to the Office of the Chief Medical Examiner who will determine the cause of death.

J. Derenzo Co., a subcontractor on the project, identified the victim as employee Joe Teixeira, a Seekonk resident.

"Our deepest-felt thoughts and prayers are with Joe’s family, friends and co-workers, as well as everyone impacted by this incident," said a J. Derenzo spokeswoman in a statement. "We offer our condolences and support in the aftermath of this tragic event."

Greg John, a spokesman for the Wynn project, said the casino company would launch a "full investigation" into the incident.

"This is a very sad day for everyone at Wynn Boston Harbor," said John. "Our deepest condolences and heartfelt thoughts and prayers go out to his family and coworkers."

The incident caused no pause or delay in construction, John added. "We do have grief counselors available on site today," he said.

A spokesperson for Suffolk Construction, the general contractor for the casino, referred all inquired to Wynn representatives. A federal Occupational Safety and Health Administration spokesman said that the agency has opened inspections into Suffolk and J. Derenzo Co. to determine whether or not there were any violations of workplace safety or health standards in connection with the incident.

Massachusetts Gaming Commission Spokesperson Elaine Driscoll said the commission was "deeply saddened" to learn of the death.

"We extend our most heartfelt sympathy to the worker’s loved ones," Driscoll said. "The Commission anticipates that the federal Occupational Safety and Health Administration, as well as the appropriate local authorities, will conduct a comprehensive review of the circumstances surrounding this incident."

This past January, a construction worker was hospitalized after falling down an elevator shaft at the same construction site, according to NECN.

With an estimated price tag of $2.4 billion, Wynn Resorts Ltd. (Nasdaq: WYNN) is billing the Everett resort as the largest single-phase privately funded development ever to be built in the history of Massachusetts.

The project — scheduled to open June 2019 — will eventually feature a 27-story, 671-room hotel and casino floor, with an attached convention center facility. The hotel and gaming floor will sit atop what’s essentially an 11-foot parking garage podium level, which is technically located on the property’s first floor but will be developed to look as though it’s underground. There will also be three levels of underground parking.

According to the Bureau of Labor Statistics, there were 29 work-related fatalities in the construction industry in Massachusetts in 2016, the most recent year in which data is available.