In his black pants, soaked with warm liquid, you uncover a small, plastic canister containing a role of film negatives.
If there was a detective on site, you'd let them bother with this kind of stuff. However, the police officer is dead, and you ponder whether the contents of the film is even worth developing.

Examine Sebastien Ariel's body
Talk to Sebastien Ariel's body
Step away from the body