230usherjog080511_08_X17.jpgUsher's 11-year-old stepson, Kile Glover, passed away on Saturday morning after he was taken off life support, following injuries he suffered from s July 8 jet ski accident.

Usher's ex-wife Tameka Foster made the decision to take her son off life support, as he was reportedly declared brain dead after being struck in the head by a jet ski, driven by a friend of the family, while riding an inner tube on Lake Lanier, in Atlanta, GA.

Jeffrey S. Hubbard was riding the jet ski at the time of the collision and is currently under investigation, according to ABC News.

The 11-year-old was riding with a 15-year-old girl at the time of the accident, and while both were air lifted to the Children's Healthcare of Atlanta at Egleston, Glover reportedly registered no brain activity, while his friend suffered a broken arm and cut on her head.

Usher is currently engaged in a heated custody battle with and Foster over their sons Usher Raymond V, 4, and Naviyd, 3, but the Grammy winner has been conforting his ex during this difficult time.

A source close to the family told Us mag: "Tameka and Usher don't get along, but in this circumstance Usher is coming to her side. Usher practically raised Kile as his own. He's known him for seven years. It is so sad what happened."

Another source recently told Us, "He grew close to Kile and, of course, that has nothing to do with the situation with Tameka. He loved Kile. This is a terrible, awful tragedy. Usher is torn up."

Kile posed for this Twitpic with his brother, shortly before his death.