An Atlanta man has pleaded not guilty to charges in the boating collision death of music star Usher's 11-year-old stepson.

The Times of Gainesville reports (http://bit.ly/Zu9K4w) that Jeffrey Simon Hubbard entered the not guilty plea Tuesday to all charges, including first-degree homicide by vessel.

The boy, Kile Glover, was the son of Usher's ex-wife, Tameka Raymond.

Authorities say Kile and his father, Ryan Glover, were vacationing at Lake Lanier when Hubbard crashed a personal watercraft into the boy's raft July 6. Kile died at a hospital July 21.

Hubbard, whose lawyer Jeff Talley entered the plea on his behalf, also pleaded not guilty to charges of reckless operation of a vessel, unlawful operation of a personal watercraft, boat traffic violation and serious injury by vessel.

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Information from: The Times, http://www.gainesvilletimes.com