ATLANTA — A shooting early Sunday during homecoming weekend at Tuskegee University in Alabama left one person dead and injured 16 others, a dozen of them by gunfire, authorities said. One arrest was announced hours later.

The Alabama Law Enforcement Agency said Jaquez Myrick, 25, of Montgomery, was taken into custody while leaving the scene of the campus shooting and had been found with a handgun with a machine gun conversion device. The agency said in a statement that Myrick faces a federal charge of possession of a machine gun. It did not accuse him of using the gun in the shooting or provide additional details.

The agency did not say whether Myrick was a student at the historically Black university where the shooting erupted as the school’s 100th Homecoming Week was winding down. Authorities said an 18-year-old man who died was not a university student but that some of the injured were students.

It was not immediately known if Myrick had an attorney who could speak on his behalf.

Twelve people were wounded by gunfire, and four others sustained injuries not related to the gunshots, the state agency said. Several were being treated at East Alabama Medical Center in Opelika and Baptist South Hospital in Montgomery, the university said in a statement. Their conditions were not immediately released.

The FBI joined the investigation and said it was seeking tips from the public, as well as any video witnesses might have. It set up a site online for people to upload video. The Bureau of Alcohol, Tobacco, Firearms and Explosives also was involved in the investigation, a local prosecutor said.

Tuskegee University canceled classes today and said grief counselors will be available in the university’s chapel to help students.

The parents of the victim were notified, and an autopsy was planned at the state’s forensic center in Montgomery, Macon County Coroner Hal Bentley told The Associated Press.