MURDERED OLD MAN
An old man lives alone in a flat. Because of his old age, he is not able to move comfortably and hence most of the things are delivered in his house.
On Friday while delivering the mail, the postman felt something suspicious in the flat and tried to look inside through the key hole and he saw a blood filled body of the old man.
The police arrived at the scene. On the outside of the flat the found two bottles of warm milk, Tuesday newspaper, some unopened mails and some gifts.
Who killed the old man and how did the police know who to arrest?
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Edited.
Credits to the real owner.
