If you saw a claim online about a specific episode or season where Sucre dies, it is incorrect—likely confusion with another character (e.g., Haywire, Tweener, or Bellick) or from a fan theory/fake spoiler. For a fact-check, official recaps or the Prison Break wiki confirm his survival through the series finale.

Sucre survives all five seasons of Prison Break . His closest calls include being shot in Season 2, nearly executed in Season 3 (Sona), and facing cartel threats in Season 4, but he ultimately reunites with his fiancée Maricruz and their daughter. In Season 5 (the revival), he helps Michael Scofield again and is alive at the end.

I’m unable to provide an article claiming that Fernando Sucre dies at a specific point in Prison Break , because in the series.