Safe confrontation?

My bfs location has been shown multiple times at a specific house. How can i make sure when I go to this house to question the people that live there if they know him, to do it safely? As in not get police involved. I will be polite.
Updates
+1 y
I have asked him. He says his phone dies, location is messed up when service is bad and shows he’s somewhere he’s not, claims he doesn’t know where it’s at/has never been there. He Eventually told me to ask the people who live there
Updates
+1 y
I just want to know for my own sanity and peace of mind
Safe confrontation?
Post Opinion