How do police isolate and secure a crime scene?

How do police isolate and secure a crime scene?

One of the easiest things to do is to put up a tape around the scene to define the perimeter of the crime scene. Of course you also want to station police personnel at key areas of the scene to keep individuals out of the scene. If anyone has to enter the scene there should be a log that is kept so each of these individuals are identified and accounted for. There will usually be an individual who we'll designate as the lead investigator. That person is responsible for generally overseeing the crime scene.