Little boy Joseph Zarelli: While Fitzpatrick couldn't be totally forthcoming with additional info, it seems he remained with at least one parent and was not adopted out. Also, he was the youngest of all his half-siblings, and he did have a half-sister who was adopted.

 https://www.youtube.com/watch?v=phskgtBBuMM

He was never put up for adoption, that makes what happened a little clearer, and puts to rest the deranged conspiracy theory rabbit hole fan fiction scenarios pretending he was adopted or fostered etc. The police also indirectly implied he stayed with his mother.