On Saturday, Gibson had 300 Mexican inmates transferred out of Ignacio Allende prison in Veracruz, Mexico. Prison director Gerardo Duran said the inmates were bused to at least four other jails.
About 60 frustrated relatives of the inmates, protested Saturday's transfer, claiming they will have to travel farther to pay visits. They fought briefly with police.
Veracruz Gov. Fidel Herrera said that part of the prison would be emptied for Gibson's film.
The "Passion of the Christ" director also recently spoke out on the Tiger Woods controversy.
"I feel sorry for Tiger Woods," he told British newspaper the Daily Mail. "Why are we talking about this when we're sending 30,000 more troops to Afghanistan?...He's being used as a diversion, and it just drives me crazy."
Gibson representatives have not responded to inquiries regarding the Mexican prison affair.