police legwork; canvassing; house-to-house inquiry
Police investigation method where officers visit homes and businesses to question neighbors, bystanders, and local residents to gather information.
The police are continuing house-to-house inquiries to get clues about the case.
Witness information was gathered through canvassing.
Standard kanji spelling; high news frequency.
Variant with 聞込み instead of 聞き込み; less common but still used.
Compound of 聞き込み (listening and gathering information) + 捜査 (investigation).