Two workers suffered serious injuries Thursday when they took a fall at a Laurel-area construction site, fire officials said.

The men reportedly dropped about 20 feet from the second story of a building going up near Muirkirk Road and Old Baltimore Pike.

Prince George's County Fire Department spokesman Mark Brady said firefighters and paramedics were dispatched to the scene around 11:30 a.m.

The workers were treated and transported to a trauma center with "non-life-threatening injuries," Brady said. A third worker was struck by falling debris but was not admitted to the hospital.

The cause of the fall was not immediately known.