His body was located during a search of Lage vaart, a large body of water between Almere and Amsterdam on Friday.
Dutch police launched a missing persons investigation in the hopes to find him as his sister has travelled to the Netherlands to help with the search.
Sharing a photo of Mr Reilly online, his sister Lisa wrote: "Our brother is missing over in the Netherlands. If you can share this with any people you know in Almere, Amsterdam or the surroundings it would be brilliant. #helpusfindedward”