I acquired a rental property in 2015. Inc & Exp since. This Yr found out that the property was never purchased by Realtor. How do I handle on my company return?

Purchased Rental Property in 2015.  Claimed Income and Expenses on each return since.   I have a personal loan on the property that I have been claiming interest expense as well.   Found out in 2018 that the Relator I used set this whole thing up. I never really purchased.  Realtor setup fake tenant for rental income.   How do I now address this on my return?