Forensic examiners in Mexico have pieced together 29 bodies that were stuffed in plastic bags and dumped in a well earlier this month.
Investigators announced that they have identified 13 complete and 16 incomplete bodies.
Authorities said two of the victims were women, and that at least four had criminal records, without specifying their crimes.
Officials are continuing to conduct tests after the body parts were discovered near the city of Guadalajara in early September.
It's still unclear if the mass grave is related to cartel violence.

Twelve killed, 23 missing in one of Spain's deadliest wildfires
28 killed in shoe factory fire in China's Fujian
Congo Ebola outbreak still spreading largely undetected, WHO official says
Andy Burnham poised to become Britain's next PM after most Labour lawmakers support him
Japan's southwestern islands on high alert as powerful Typhoon Bavi approaches
Sri Lanka moves to address prison overcrowding after riot kills 28
US military carries out second round of strikes on Iran
Jordan intercepts 8 missiles launched from Iran
