Investigators will conduct DNA tests to confirm the identity of the Zetas leader . Police search a cemetery in central Mexico as authorities recover his wife 's remains . Authorities have said there 's no evidence they killed Heriberto Lazcano Lazcano . The cartel chief 's body was recovered from a funeral home .
Investigators will conduct DNA tests to confirm the killing of the Zetas leader . Police guard a cemetery in central Mexico as authorities exhume his mother 's remains . Authorities have said there 's no doubt they killed Heriberto Lazcano Lazcano . The cartel chief 's body was stolen from a funeral home .