I need help with a Law question. All explanations and answers will be used to help me learn.

Consider a scenario in which a 25-year-old woman is found dead in her apartment. Near the body is a baseball bat splattered with the victim’s blood. An examination of the bat reveals fingerprints that appear to match those of the victim’s ex-boyfriend.

How conclusive is this evidence? Based on this evidence, should the police arrest the ex-boyfriend? Why or why not?

In the above scenario, what precautions would you take in order to preserve the evidence in the room? What other evidence might you be looking for? Explain how you would manage this scene.