Cranston, who played Mitte's father Walter White on the show, took to Instagram Monday evening to express his pain over the tragic loss, as did fellow castmates Aaron Paul and Dean Norris. Almost 20 years after Breaking Bad began, Bryan Cranston tonight lamented the death Monday of the man who played his son on the acclaimed series. Key points and original sources are listed below.

• Cranston, who played Mitte's father Walter White on the show, took to Instagram Monday evening to express his pain over the tragic loss, as did fellow castmates Aaron Paul and Dean Norris.S1

• Almost 20 years after Breaking Bad began, Bryan Cranston tonight lamented the death Monday of the man who played his son on the acclaimed series. “I’m in deep despair as I write this tonight. RJ Mitte, my sweet son on Breaking Bad has died,” Cranston said on h...S2

• Breaking Bad star Bryan Cranston pays tribute to his TV son RJ Mitte, following news of the actor's death at age 34: "I'm in deep despair as I write this..."S3

• Bryan Cranston shared a tribute to RJ Mitte, who played his son Walter White Jr. in “Breaking Bad,” following the news of his death at age 34. “I’m in deep despair as I write this tonight. RJ Mitte, my sweet son on Breaking Bad has died,” wrote Cranston. “I me...S4