One worker died and two others were injured Tuesday in Raleigh, North Carolina when they were buried in a collapse at an excavated area.

News sources say the incident occurred at 11:15 a.m. at a worksite where affordable housing is under construction. Co-workers pulled two of those caught in the collapsed dirt to safety but were not able to retrieve the third victim.

The accident is being investigated by the North Carolina Division of Occupational Safety and Health.

Construction accidents accounted for half of the 44 workplace deaths in North Carolina last year, according to the state Department of Labor.