DOUGLASVILLE, Ga. (AP) — A Georgia high school football player is dead after drinking too much fluid during practice.

Relatives of 17-year-old Zyrees Oliver had him removed from life support early Monday in a hospital in Marietta. He had no brain activity.

Oliver was declared dead a short time later.

Oliver played football at Douglas County High School west of Atlanta.

Relatives say the youth complained of cramping during football practice on Tuesday. Aunt Tammy Chavis says the teen drank two gallons of water and two more gallons of Gatorade.

Oliver's mother picked him up because he couldn't drive, and he later collapsed at home and was taken to the hospital by helicopter.

Relatives say doctors told them Oliver suffered massive swelling around the brain from over-hydration.

The coroner says an autopsy is planned.