Don’t discount personal curiosity overcoming survival moves.
Running away at once would attract attention.
There are too many important criminals who do not want the truth to ever be revealed about their many crimes.
We will have our answers to many mysteries once the Final Judgment occurs,if those answers even matter then.
“Running away at once would attract attention.”
He wouldn’t have run away. In fact he was instructed to calmly walk away not run away. Once he took the shot he would ducked down below the fence to first focus on putting his gun away and then walk away.