The GBI is investigating the death of a man at the historic Pullman Train Yard in east Atlanta on Friday.

Alexander Flynn fell to his death from one of the buildings at the train yard after he and two friends entered the property to skateboard, according to the Georgia Bureau of Investigation, which has been asked to handle the investigation. The train yard is located at the intersection of Arizona Avenue and Rogers Street.

Flynn reportedly climbed to the roof of the building using a ladder that was affixed to the inside of the structure, according to GBI spokeswoman Nelly Miles. When he attempted to walk across the roof top, it appears he stepped on a fiberglass skylight, and fell about 40 feet onto the concrete floor below, Miles said.

The Dunwoody Crier reports that Flynn was a 2015 graduate of Dunwoody High School, and a freshman at Georgia College and State University in Milledgeville.

The Pullman Train Yard is a set of historical buildings of brick railroad warehouses located in the Kirkwood area of Atlanta. The train yard contains cranes, massive platforms, and trains. “Over the past several years, there have been multiple reports of trespassers at this location and its surrounding area,” The GBI said. “Public awareness of the dangers associated with trespassing in this area is critical.”