Family members of some of the missing student teachers in Mexico denied official claims that their loved ones had been burned and dumped in a garbage bin.<br/> <br />Earlier, government officials said three gang members apprehended last week admitted to setting fire to a group of bodies.<br/> <br />The mother of one of the students says she's waiting for more concrete evidence.<br/> <br />We do not accept this declaration, she said. Even the officials themselves say they aren't certain, so we are waiting for more proof.<br/> <br />But they may be waiting for a long time. Government officials say the charred remains were so badly burned some turned to dust upon contact. Although they stressed every effort would be made to identify the bodies.<br/> <br />Officials say a group of corrupt police working with a local drug gang abducted the students after clashes in the state of Guerrero in late September.