Overview
- Journalist Ángel de Brito confirmed Castro’s death on Oct. 17 via X, sharing a photo of Mariano with his late twin, Juan.
- A wake was held at the América funeral home in Palermo, followed by burial at Chacarita, with relatives and public figures in attendance.
- Mey Scápola, mother of Castro’s son León, posted a farewell noting a long battle and saying he left in peace, while Mercedes Morán also shared a tribute.
- Castro had disclosed in 2020–2021 that he was being treated for lung cancer with metastasis, and some outlets reported he had recently suffered a stroke.
- The low‑profile journalist and media figure often spoke about his close bond with Juan, and his final Instagram post on Aug. 25 showed a moment with his son.