Crime scene: 162 mystery solving puzzles to find out who the murderer is

Chapter 139 The Corpse in the Church
One morning in early autumn, a body was found in front of the church in Village B.The body was just below the bottom of the tower, on the ground about 30 centimeters from the wall.The church is about 15 meters high, and at a height of 10 meters, a window was opened.

The Chief of Police of Village B came to the scene. He examined the body of the deceased, and the forensic doctor signed a certificate stating that the cause of death was fatal due to a fall from a height.

The deceased was dressed in rags and appeared to be a poor old man.The Chief of Police said: "This is a very common case. The deceased committed suicide by jumping off the tower because he couldn't bear the pain of life." Said: "Sheriff, I think the deceased moved here after being killed, not suicide!"

The police gave reasons and fully proved that this was a murder.Can you guess the basis for the policeman's deduction?
[Answer] The body is only 30 cm away from the wall. If it falls from a height of 10 meters, the body cannot be so close to the wall.

(End of this chapter)