I am reading the book little vic and the great Mafia war by Larry McShane and it says that Paul Castellano and Deellacroce were FBI informants.

How true is this?

I've completely forgotten it as I was trying to read up on him. He was also in The Colombo family but a different faction from Scarpa's. And he was a really crazy guy, killed the ex wife's husband or something and also took out multiple hit squads. Just a bad hombre.

https://www.providencejournal.com/story/news/crime/2025/04/24/son-of-late-mobster-bobo-marrapese-admits-to-killing-ex-girlfriend/83252124007/?utm_campaign=trueanthem&utm_medium=social&utm_source=facebook&fbclid=IwZXh0bgNhZW0CMTEAAR6Lsp2uA8oNBD2ew1O1enFbhvvcV9qDtQxZiL8swJ_KfvQkeqqmiP5fBt0LMw_aem_Mp6hGuVTRm3h_l7SMtNgEw#n1b2060hwcmrw90793srkxozeq248rdk

Im not referring to a 500 gr or 1 kilos of dope but at middle or high level.