City Inspector took pictures of FLIP work without permits, HELP !

[Jose Trujillo]

Hello BP !! So it happens that an inspector walked around our current flip and looked inside through the back windows of the house and took pictures (front windows were covered from the inside with curtains). We were told by the plumber that was working behind the house and he was also asked if he had permits to do the plumbing work. Plumber said he did not know and that he was not the owner. 

It is the first time i face this issue, what can i expect to happen next and what can i do to get ready for what is to come ? Should i keep working on the house or stop all work ? 

Any recommendations, advice or similar stories would be greatly appreciated.

Thanks to all in advance !!