Hubbard also pleaded not guilty before Superior Court Judge Bonnie Oliver in Hall County Tuesday to charges of reckless operation of a vessel, unlawful operation of a personal watercraft, boat traffic violation and serious injury by vessel, the Gainesville (Ga.) Times reported.
Hubbard was a family friend on vacation with the victim's family July 6, 2012 when the personal watercraft he was driving on Lake Lanier crashed into an inner tube carrying Kile Glover and Jordan Shepp.
Kile was the 11-year-old son of Usher's ex-wife, Tameka Raymond, and Ryan Glover, a Bounce TV executive. The child suffered severe brain injuries in the incident and never regained consciousness after he was hospitalized. He died July 21.
Shepp injured her left arm and her scalp was "seriously disfigured," the Times reported the indictment said.