I hadn't read this yet, so posting in case anyone else missed it with the fast pace of this thread...a house was searched in Peru, Indiana (about 45 minutes from Delphi). It was the second search warrant in the case. Nothing was found.
http://cbs4indy.com/2017/02/25/fbi-searches-peru-house-regarding-delphi-killings-nothing-found/
http://cbs4indy.com/2017/02/25/fbi-searches-peru-house-regarding-delphi-killings-nothing-found/