shortly before mr. scott was shot to death. officer michael slager who was fired from his job in the north charleston police department is now sitting in a jail cell and he is charged with mr. scott's murder. the county sheriff tells cnn that officer slager is in a cell by himself, that he is isolated from the general population and that he is frequently being monitored for his mental health. video of officer michael slager's actions right after the shooting of walter scott is raising some troubling questions about what he was actually doing. was he, in fact, trying to plant evidence to justify the shooting or was it something else? our kyung lah reports. >> reporter: officer michael slager shooting walter scott is shocking enough, but it is this moment, says los angeles defense attorney, darren kavinoky, this is something he's never seen. >> it looks like the officer is dropping an object. we see him drop what appears to