US actor RJ Mitte, best known for his role as the defiant son of drug kingpin Walter White in the drama series Breaking Bad, has died aged 34. He died in Brownsville, Texas. No immediate cause of death was provided. Mitte, who lived with cerebral palsy, drew on his own experience for his role as Walter White Jr in the Emmy-winning drama series starring Bryan Cranston and Aaron Paul. He earned a Screen Actors Guild Award in 2014 for his work on the series.