john holeman sent this report. another mass brave is unearthed in mexico, but this time, not drug lords but authorities from the central state permitted burying more than 100 bodies in this bit. pit. they neglected have been dutched there. only after the family pressures them did they finally admit the truth. >> there's an attitude of corruption, and the only thing it provokes is that crimes be evens the people continue. it is illegal to use mass graves to make space in their morgues but only after the family oz if dead are informed when possible, and deaths are first investigated. that didn't happen here, they show that several bodies were dutched in the pit, without identification. more than 100 bodies are still in this grave first admitted this is an illicit deprave and then changed their story. we asked them why, and got only this. >> words that ring hollow, at least they have now been able to give him a decent burial, many others have disappeared people are left craving even that. mexico. >> cities around the

john holeman reports >> reporter: another mass grave is unearthed in mexico. this time not drug lords but authorities have admitted burying more than a hundred bodies in this pit. they neglected to tell this woman her son had been dumped there. for the first time she has seen video of him being pulled out. >> translation: >> reporter: for months authorities had assured his family his body was in a morgua waiting tests to find out who kidnapped and kill him. only after the family pressured them that they finally admitted the truth. now more families are wondering if their loved ones could also be in this pit. there are more than 80 disappeared people. authorities haven't solved a single case. >> translation: there's an attitude of corruption. the only thing is it provokess is the crimes against these people continues. >> reporter: it is legal for mexican authorities to use mass graves to make space in their morgues, but only after the families of the dead are informed when possible and deaths are first investigated. that didn't happen here coring to state attor