JUPITER - A motorcyclist who was critically injured nine days ago at the Palm Beach International Raceway died today, the Palm Beach County Sheriff's Office said.

Isidro Castillo, 32, crashed around 2:45 p.m. on Oct. 4 at the race track just west of Jupiter and was flown by helicopter to St. Mary's Medical Center in West Palm Beach. The track was hosting the Championship Cup Series. The man was making a turn when he lost control of his motorcycle and slammed into a wall, said Teri Barbera, spokeswoman for the Palm Beach County Sheriff's Office.

In May, a boy, 9, was critically injured during go-kart racing at the raceway. Devin Olmstead suffered severe burns to his arms and torso after his go-kart went out of control, flipped over and burst into flames.

Brian Haas can be reached at bhaas@SunSentinel.com or 561-243-6633.