Workers at an unmarked building suspected of housing migrants in Tuscon, Ariz. refused to answer Fox News' Rachel Campos-Duffy's questions and asked her to leave the facility, she reported Monday.

The "Fox & Friends Weekend" host received a tip to investigate the facility Casa Alitas, which had all signs removed from its exterior. She explained the lack of signs was a signal it was an NGO — non-governmental organization — housing illegal immigrants.

After asking if she could book a room, a woman behind the hotel counter asked Campos-Duffy to leave the building, claiming she was on "private property." 

The woman refused to answer questions about whose property it was, instead asking security to escort Campos-Duffy out of the building.