Higurashi no Naku Koro ni Rei - Irotoutoshi-hen - Vol. 3 Ch. 10.2

[MangaDex]

 

[KenshiroKosuke]

Can't they just put on security camera? The setting is in present day so it should be possible. Also, the Polaris resides at the far end of Hinazawa (I forgot what that area is called) so there should only be a small number of routes to go between there and the village.