By CBS3 Staff

WARRINGTON TOWNSHIP, Pa. (CBS) — Authorities in Warrington Township are investigating after reports of mail theft. Warrington Police said they are looking into thefts of checks and merchandise from a residence.

There was also a theft from a blue collection box in a neighborhood. Police said that in two cases, personal checks were altered, written out to someone else, and cashed.

Police urged residents to drop mail off at or inside a post office.