Post office workers in Kunitachi, Japan were surprised recently by a many who came in and placed a bag that contained 350,000 yen on the counter, and then fled. Police guess that the man intended to pay back cash stolen from the post office earlier this year.

The same post office was robbed in March this year by a knife-wielding man who stole 340,000 yen in cash, and police believe the man who turned up to return the money was the one who stole the cash.

Police are holding the cash as evidence, and cannot return it to the post office until the statue of limitations on the robbery expires.

Investigators said the money was all in 10,000 yen notes, and was in a brown envelope.