The recruit had arrived at the depot the day before and had been going through the initial processing procedures prior to beginning boot camp training.
A Parris Island spokesman, Capt. Adam Flores, told Military.com on Thursday that the recruit fell from the roof of a one-story building and was subsequently transported to an off-site medical facility.
Officials refused to say where the recruit was taken or to provide any additional information. It's also unclear whether the recruit's injuries were caused by an accidental fall or an intentional jump from the building.
A source told Military.com that the recruit was airlifted to a medical facility in Savannah, Georgia.
It's the third time since 2016 that a recruit has been injured in a fall from a building at Parris Island.
Last October, 19-year-old Kristian Gashaj, a recruit from Michigan, was hospitalized after reportedly jumping from a second-story building at the depot, just four days after his arrival. As of June, he remains in a coma.
And in March 2016, 20-year-old Raheel Siddiqui, also from Michigan, jumped to his death from the third floor of a barracks structure during training with 3rd Recruit Training Battalion.
Siddiqui's death opened a massive inquiry into accounts of hazing within the battalion. An investigation published last year found that Siddiqui's mistreatment at the hands of a senior drill instructor likely provided the impetus for the recruit's suicide.