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(Image: CEN)

Wang Yin, the unfortunate homeowner, said he began noticing disgusting amounts of human and food waste appearing on or in front of his door in August last year, and decided to finally install a security camera this March.

The man from Changchun, capital of north-east China’s Jilin Province, said that video footage gathered shows a hooded woman visiting his flat several times a month and sometimes even twice a week, throwing buckets of excrement on his door.

As the culprit is always wearing a mask or holding an umbrella, it is impossible to make out the face – but Wang is certain it is a woman.

He is, however, not sure if she is a resident of his building.

(Image: CEN)

Wang said the person usually comes after 7pm, but the person’s visiting pattern is irregular and she is almost impossible to catch.

(Image: CEN)

He told mainstream media and local police that he does not have any enemies, and that he does not recall any conflicts with neighbours who may want revenge.

Wang said the inconvenience gave him no choice but to reach out through local media, and he has now offered a 5,000 RMB (517 GBP) reward to anyone who can offer clues as to the person’s identity.