( CNN ) -- A jury in Georgia found a man guilty of homicide by vessel in the death of singer Usher Raymond 's former stepson . Kile Glover , 11 , and a 15-year-old girl were riding on an inner tube that was being pulled by a pontoon boat on a Georgia lake when a personal watercraft hit them in July 2012 , according to witnesses . Jeffrey Simon Hubbard , a 40-year-old Atlanta man , was operating the personal watercraft , investigators said . He was a family friend who was part of their group outing on Lake Lanier north of Atlanta . A Hall County , Georgia , jury Thursday found Hubbard guilty on five counts including homicide by vessel in the first degree , serious injury by vessel , reckless operation of a vessel , unlawful operation of a personal watercraft , and a boat traffic violation . Sentencing is set for next month . Kile suffered a serious head injury and died two weeks later at Children 's Healthcare at Egleston in Atlanta . The boy 's mother , Tameka Raymond , was married to Usher for two years . They have two children together from their marriage . They divorced in 2009 . Kile 's father is Ryan Glover , the president of Bounce TV , a fledgling television network targeting African-American audiences . He is also a former executive with Turner Broadcasting , the parent company of CNN . CNN 's Suzanne Presto contributed to this report .
Jeffrey Simon Hubbard , two years , was riding on an inner tube hit by a personal watercraft . Kile Glover was operating the personal watercraft . The boy 's mother , Jeffrey Simon Hubbard , was married to Usher for 11 .