An 18-year-old man was found dead on a Maryland road early Saturday with injuries that appeared consistent with a crash, authorities said. The Frederick County Sheriff’s Office said vehicle debris and skid marks were nearby, but no vehicle.

At the home of a friend of the victim’s, deputies found a man, also 18, with what appeared to be a self-inflicted gunshot wound, the sheriff’s office said.

The sheriff’s office identified the dead man as Brandon E. Herbert and the wounded man as Seth B. Fisher, both of Thurmont, northwest of Washington.

After Herbert was found on Black Road about 2 a.m., investigators learned that he might have been with a friend earlier, the sheriff’s office said.

A truck at the friend’s house showed damage consistent with the roadway debris, and the wounded man was spotted in the house and taken to a hospital, the sheriff’s office said. Officials said they were still trying to determine how or why the crash occurred.