A man was arrested nearly 14 hours after a shooting inside MGM National Harbor in Maryland left one man dead Wednesday, Prince George's County police said.

Benjamin Williams, 22, of Fort Washington, is facing murder, assault and gun possession charges for the shooting that killed 23-year-old Darnell Hawkins Jr., of Washington, D.C., according to police.

Officials said video from the casino was instrumental in making the arrest.

"There's almost no areas in MGM that are not covered by video, and that was instrumental in bringing this case to a swift close," Prince George's County Police Chief George Nader said during a news conference Thursday.

Investigators are still working to determine the motive for the shooting, but they believe Williams and Hawkins knew each other.

Williams is

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