An investigation is underway into the apparent electrocution death of a construction worker at Charlotte Douglas International Airport. The incident, which occurred just after midnight on July 25 at the Charlotte N.C. facility, involved an employee of San Jose, Calif.-based Rosendin Electric whose identity has not been made public. 

According to the North Carolina Dept. of Labor, the worker was found unresponsive at an airport jobsite. After paramedics were unable to revive him on site, the worker was transported to a hospital and subsequently pronounced dead.

The state Occupational Safety and Health Division opened its probe after being notified of the fatality on July 26. An agency spokesperson says the investigation could last several months, depending on the complexity of the incident.

Rosendin Electric noted that the cause of death remains unknown, and that the company is “actively investigating the incident” with state officials, In a statement expressing condolences to the victim’s family. 

Rosendin, which has an office in Charlotte, has provided a variety of electrical contractor services for the airport’s $3.1-billion “Destination CLT” program, according to the company website. The firm has been involved with the expansion and renovation of Concourse A and renovations to Concourse B. Improvements include nine new gates, upgraded building systems, a new flight information display system and seating with wireless charging armrests.