In this Friday, Sept. 4, 2015 photo, the parents of Gerardo Alberto Alcocer Ocampo walk together after visiting their son's remains at the family vault in the town's cemetery in Huitzuco, Mexico. Alcocer Ocampo was 28 when he disappeared on April 12, 2013. His parents are among the very few families that can give some kind of closure to the tragedy of their son's disappearance since a few months ago, Mexico's Attorney General's office confirmed through DNA tests that they had found his remains in a clandestine grave containing two other bodies. Their son is among the 25,000 Mexicans who have disappeared since 2007, according to the government’s count.(AP Photo/Dario Lopez-Mills)
In this Tuesday, Oct. 20, 2015 photo, Mario Vergara Hernandez pinches himself as he stands over a field in which dozens of bodies were found buried in clandestine graves on the outskirts of Iguala, Mexico. Mario is seeking for his brother, Tomas Vergara Hernandez, kidnapped and missing since July 5, 2012. The first time the men and women in Iguala went out to dig for their missing relatives, they didn’t know anything. “We knew we were going to look for buried bodies, but we never imagined that was what we would find, " said Vergara, "What we saw broke us.” He has yet to find his brother. (AP Photo/Dario Lopez-Mills)
In this May 31, 2015 photo, relatives of missing people ride on the back of a pick-up truck as they head to a site of a possible clandestine grave after they received an anonymous tip in Iguala, Mexico. A group of relatives of missing persons in the region has banded together to search for their missing relatives. Since the government began excavating suspected graves found by this group scouring the surrounding mountains looking for their loved ones late last year, more than 100 bodies have been exhumed though most still await identification. (AP Photo/Dario Lopez-Mills)
In this April 22, 2015 photo, Bertha Moreno Garcia, who is searching for her son, Jose Manuel Cruz Moreno, looks for clandestine graves amidst dry vegetation on the outskirts of Iguala, Mexico. A group of relatives of missing persons in the region has banded together to search for their missing relatives. Since the government began excavating suspected graves found by this group scouring the surrounding mountains looking for their loved ones late last year, more than 100 bodies have been exhumed though most still await identification. (AP Photo/Dario Lopez-Mills)
In this May 31, 2015 photo, a relative of missing people smells a stick that was stuck into the ground as she and others search for signs of a possible clandestine grave after they received an anonymous tip in Iguala, Mexico. They belong to a a group of relatives of missing persons in the region that has banded together to search for their missing relatives. Authorities quickly prohibited them from digging up the graves themselves, saying they had broken bones and contaminated crime scenes. But the families didn’t stop looking. Instead, they started using metal rods or sticks as a detection device: they pushed a rod into the ground and if it smelled when they removed it, they knew they had a grave to mark with a flag for authorities. (AP Photo/Dario Lopez-Mills)
In this Tuesday, Oct. 20, 2015 photo, relatives of missing people gather at the San Gerardo church in Iguala, Mexico. Little attention had been paid to the many people that have disappeared or been kidnapped in this region since 2010 until 43 students from a rural teachers college disappeared in this city on Sept. 26, 2014. Two months after the students disappeared hundreds of families began coming forward to tell their stories, emboldened by the international attention focused on the missing students.
The families’ message was simple: there are many more missing. To tell the stories of those other disappeared and the gaping wounds that their kidnappings left behind the AP interviewed the relatives of 147 of those missing. (AP Photo/Dario Lopez-Mills)
In this Oct. 20, 2015 photo, a family listens to Mario Vergara Hernandez as they reach out to find information about their missing relative at the San Gerardo church in Iguala, Mexico. Mario is one of the leaders of the group that calls itself “the other disappeared.” Little attention had been paid to the many people that have disappeared or been kidnapped in this region since 2010 until 43 students from a rural teachers college disappeared in this city on Sept. 26, 2014. Two months after the students disappeared hundreds of families began coming forward to tell their stories, emboldened by the national uproar over the students, and eager to find their own relatives, hundreds of families came out of a scared silence to report kidnappings for the first time, adding names to a list of 26,000 missing nationwide. (AP Photo/Dario Lopez-Mills)
Mario Vergara Hernandez, who is searching for his missing kidnapped brother speaks to other relatives of missing persons as he stands in front of a whiteboard that makes an accounting of the bodies found and donations to the group in Iguala, Tuesday, Dec. 1, 2015. Little attention had been paid to the many people that have disappeared or been kidnapped in this region since 2010 until 43 students from a rural teachers college disappeared in this city on Sept. 26, 2014. Two months after the students disappeared hundreds of families began coming forward to tell their stories, emboldened by the national uproar over the students, and eager to find their own relatives, hundreds of families came out of a scared silence to report kidnappings for the first time, adding names to a list of 26,000 missing nationwide. (AP Photo/Dario Lopez-Mills)
Relatives of missing people leaf through a binder notebook with images and information of missing people inside the basement of the San Gerardo Church in Iguala, Tuesday, Dec. 1, 2015. Little attention had been paid to the many people that have disappeared or been kidnapped in this region since 2010 until 43 students from a rural teachers college disappeared in this city on Sept. 26, 2014. Two months after the students disappeared hundreds of families began coming forward to tell their stories, emboldened by the national uproar over the students, and eager to find their own relatives, hundreds of families came out of a scared silence to report kidnappings for the first time, adding names to a list of 26,000 missing nationwide. (AP Photo/Dario Lopez-Mills)
In this May 31, 2015 photo, Mario Vergara Hernandez, who is searching for his kidnapped brother, examines a patch of earth as he and others search for signs of a possible clandestine grave after they received an anonymous tip in Iguala, Mexico. They belong to a a group of relatives of missing persons in the region that has banded together to search for their missing relatives. Authorities quickly prohibited them from digging up the graves themselves, saying they had broken bones and contaminated crime scenes. But the families didn’t stop looking. Instead, they started using metal rods or sticks as a detection device: they pushed a rod into the ground and if it smelled when they removed it, they knew they had a grave to mark with a flag for authorities. (AP Photo/Dario Lopez-Mills)
In this Friday, Sept. 4, 2015 photo, Gerardo Alcocer Dorado, father of Gerardo Alberto Alcocer Ocampo, stands next to the family vault containing his son's remains in the town's cemetery in Huitzuco, Mexico. Alcocer Ocampo was 28 when he disappeared on April 12, 2013. His parents are among the very few families that can give some kind of closure to the tragedy of their son's disappearance since a few months ago, Mexico's Attorney General's office confirmed through DNA tests that they had found his remains in a clandestine grave containing two other bodies. Their son is among the 25,000 Mexicans who have disappeared since 2007, according to the government’s count.(AP Photo/Dario Lopez-Mills)
In this Friday, Sept. 4, 2015 photo, Gerardo Alcocer Dorado, father of Gerardo Alberto Alcocer Ocampo, stands outside of the family vault containing his son's remains in the town's cemetery in Huitzuco, Mexico. Alcocer Ocampo was 28 when he disappeared on April 12, 2013. His parents are among the very few families that can give some kind of closure to the tragedy of their son's disappearance since a few months ago, Mexico's Attorney General's office confirmed through DNA tests that they had found his remains in a clandestine grave containing two other bodies. Their son is among the 25,000 Mexicans who have disappeared since 2007, according to the government’s count.(AP Photo/Dario Lopez-Mills)
In this Wednesday, April 22, 2015 photo, Bertha Moreno Garcia, who is searching for her son, Jose Manuel Cruz Moreno, holds up a stone to search for tell-tale signs of discoloration as she looks for clandestine graves amidst dry vegetation on the outskirts of Iguala, Mexico. Moreno is among those who have given up Sunday Mass and dozy afternoons with family, opting instead to search for the remains of her son, a construction worker who disappeared in Iguala on January 2, 2009 at the age of 21. She believes God will forgive her lapse and protect her, even if her husband does not agree with her decision to risk the wrath of gangsters who likely are responsible for so many disappearances. (AP Photo/Dario Lopez-Mills)