A man accused of riding a jet ski which killed Usher's stepson has pleaded not guilty to all charges connected to the accident.

Jeffrey Simon Hubbard is accused of losing control of the waterborne craft which collided with 11-year-old Kile Glover on 6 July, 2012 while the youngster was sat on an inflatable raft on Lake Lanier in Georgia.

Glover, the son of Usher's ex-wife Tameka Raymond, was left brain dead and never regained consciousness. He passed away on 21 July, 2012.

During a hearing at Hall County Court in Georgia on Tuesday (19Mar13), Hubbard's lawyer entered not guilty pleas to charges of homicide with a vessel, reckless operation of a vessel, unlawful operation of a personal watercraft, boat traffic violation, and serious injury by vessel.

Hubbard is due back in court later this year (13).