A heartbreaking news story developed this past weekend as Kyle Glover, the 11 year old son to Tameka Foster and stepson to Usher, was declared brain dead Sunday after a Friday jet-ski accident.

Glover has not experienced any brain activity since he was admitted into the hospital two days ago. According to reports, the pre-teen and a friend were floating in inner tubes on Lake Lanier in Atlanta when they were struck by a man on a jet ski. Glover was unresponsive when he was taken out of the water and airlifted to Children's Healthcare of Atlanta at Egleston; his friend, an unidentified 15-year old girl, was treated for a cut on the head and a broken arm.

According to the Atlanta Journal-Constitution, the Georgia Department of Natural Resources said that alcohol doesn't appear to be a factor in the accident and the newspaper also reported that the man on the jet ski and Glover were a part of the same group on an outing at the lake.

Many of Usher and Foster's celebrity friends took to Twitter on Sunday to express their deepest sympathies.

"My deepest prayers go out to Tameka, Usher and both of their families right now," Diggy Simmons wrote.

"Wishing @TamekaRaymond's son godspeed recovery. horrible news to hear," Roots drummer Questlove added, while television personality La La Anthony wrote: "Praying for @TamekaRaymond and her family. Asking to give her and her family strength during this difficult time. Praying for u Kyle."

Read it at MTV.