This peer reviewed source by Misinformation Review titled "'Fact-checking' fact checkers: a data-driven approach" indicates that Snopes.com is not a verified reliable source. This article states, "Critically, we assessed the degree of consensus between Snopes and PolitiFact’s verdicts on matching claims (i.e., the same [mis]information with the wording of the claim being slightly different). Out of 11,639 and 10,710 fact-checking articles from Snopes and PolitiFact, respectively, 6.5% (749) were matching claims, of which 521 (69.6%) received identical ratings, while the remaining 228 (30.4%) had diverging ratings." According to this quote, the facts often do not match the claims made on the Snopes website. Additionally, the author of this article, Nur Ibrahim, is a real author but is known to focus on speculative and literary fiction according to the Lighthouse Writer's Workshop: "she writes speculative and literary fiction." This article is based on speculations made by people primarily on X who hold no legitimacy concerning the Sean Combs case. The article admits that there is no real evidence that there is even a tunnel underneath the Diddy mansion or that it leads to the infamous Playboy Mansion or Michael Jackson's house. Finally, Vice Magazine says that the theory has been debunked: "While Combs is in jail awaiting trial for alleged sex trafficking, stories circulated on social media accusing the rapper of having secret underground tunnels under his home, with some leading to the Playboy Mansion or Michael Jackson’s house. The theory has been debunked." The conclusion is that this is a highly exaggerated story that has no real basis.
https://www.vice.com/en/article/diddy-tunnels-debunked/#:~:text=While%20Combs%20is%20in%20jail,The%20theory%20has%20been%20debunked.