At least one of the 43 college students abducted in Mexico has been identified among charred remains found near a landfill site, an official has confirmed.
Forensic specialists from Argentina and Austria have been examining body parts found in mass graves and a rubbish dump in southwestern Mexico.
The students went missing on September 26 after clashes with police in the southern city of Iguala, that claimed the lives of six people.
The attorney general has said they were attacked by officers on the orders of the city’s mayor Jose Luis Abarca, who has since been arrested.
Prosecutors say the 43 students were then handed over by corrupt police to a drug gang, that killed them and burnt their bodies.
Three suspected gang members have confessed to carrying out the massacre.
Investigators have recovered only small fragments of bones to identify the victims.
The disappearance of the students at the hands of a corrupt public official, and the slow response of the federal authorities to the outrage has sparked a furious backlash cross Mexico.
Tens of thousands have taken to the streets in protest, with some calling for President Enrique Pena Nieto to resign.
The case has come to signify the abuse of authority and corruption which is rife in Mexican society.