(Updated at 10:20 a.m.) Two workers have been taken to the hospital after falling 20 feet at a construction site in Ballston.

The incident happened around 9:30 a.m. at an apartment construction site at 650 N. Glebe Road, across from the mall at the intersection of N. Carlin Springs Road.

Two workers were standing at a wall at the construction site when they somehow fell 20 feet into the construction pit, according to Arlington County Fire Department spokesman Capt. Bill Shelton. One worker was able to walk out and seek medical attention on his own power, while the other had to be lifted out of the site with a crane.

Both workers were taken to local hospitals with non-life threatening injuries, Shelton said.

This is the fourth technical rescue of a construction or maintenance worker in Arlington in the past month and a half.