The film is based loosely on an incident involving 2008's Miss Sinaloa, Laura Zúñiga. She was arrested along with suspected gang members outside Guadalajara, Jalisco, reflected in the film's concluding scenes. Miss Bala suggests that Laura's victory was fixed through criminal activity. In Complex Magazine, Naranjo states after meeting Zúñiga that, "I really didn’t want to go into their psyches. I guess the film has a very strong point-of-view, and we refuse to get into the minds of these guys, because I think that’s what every other movie does… I wanted to live the experience from the point-of-view of an innocent person."
News broadcast including real footage of Laura Zúñiga and gang:
https://www.youtube.com/watch?v=uZGQdYSHSvU