UPDATE: Second Person Dies After Wreck On Independence Boulevard

UPDATE:  Police say one of the children that was injured in a wreck on Independence Boulevard has died.  Officials say three-year-old Isaac Rowell died Tuesday afternoon.  

His mother was also killed in the wreck.  Another child is still in the hospital with serious injuries.  Police say they are seeking an additional warrant charging Kam Caw with another count of misdemeanor death by motor vehicle.  He was allegedly fatigued when the crash happened.  

CHARLOTTE, N.C. — Police have charged the driver of a vehicle who apparently was fatigued when he veered across a busy highway and struck a car at a stop sign, killing a woman and seriously injuring her children.  

Investigators say Kam Caw was traveling in the left lane of Independence Boulevard Monday morning when he suddenly veered across all four lanes and struck a Volvo that was sitting at a stop sign on Fugate Avenue.  

The woman in the Volvo, Silje Grayston, was killed and her two children were taken to a local hospital with serious injuries.  

Police say their initial findings suggest Caw was fatigued.  He was been charged with misdemeanor death by vehicle.