Full title...
Actor Sean Penn reveals he met the world’s most wanted drug lord El Chapo while he was on the run in the Mexican jungle - but DID NOT turn him in
“... but DID NOT turn him in”
I doubt that he could have turned him in. These guys aren’t dummies. I’m sure Penn had no clue where he was taken to meet El Chapo and I doubt that Penn had the resources needed to detain him.
But he still could have done two things:
1) Tip off authorities before meeting him
2) Report on the meeting afterwards