A fatal construction accident is under investigation in Georgetown.The incident was reported at the Mirra Company Inc. on Norino Way just before 4:30 p.m.State police said a male employee was killed while backing a large excavator out of a garage.The unidentified victim was pronounced dead at the scene.The incident remains under investigation, and the Occupational Safety and Health Administration was notified.No other information was released.Stay with WCVB and WCVB.com for the latest on this breaking news story.Get the WCVB News App