MEXICAN authorities say they are trying to piece together the movements of two missing Australian surfers whose burnt-out van was found with bodies inside.
Investigators have confirmed that vehicle identification numbers prove a van found torched in rural Sinaloa state, with two bodies inside, belonged to Dean Lucas and Adam Coleman.
An official from Sinaloa's local prosecutor's office had previously said the bodies in the van were too charred to identify.
Mr Lucas and Mr Coleman, from Western Australia, arrived in Sinaloa on a ferry from Baja California at night before beginning a journey toward Guadalajara, some 900 kilometres away.
They went missing on November 20.
Families fear bodies found in Mexico could be WA surfers
THE families of two Australian surfers missing in Mexico are fearing the worst after bodies were discovered in a charred Chevrolet van similar to the one the pair were driving.
West Australian travellers Dean Lucas and Adam Coleman were due to arrive in the city of Guadalajara in western Mexico by November 21, but never arrived.
Local media in Mexico reported news of the remains, but police are yet to say if the bodies belong to the Australians.
Dean Lucas's girlfriend Josie Cox told the ABC: "Nothing is confirmed, it's just a similar van".
"(It's) most likely theirs but I'm keeping positive it's not."
The vehicle was found in an area considered among the most dangerous in Mexico, home to drug cartels and gangs.
DFAT released a statement on Sunday saying that a "tragic event has occurred" and that Dean and Adam's van had been found by Mexican authorities.
"The families hold deep fears for the safety of their sons but stress that they are still waiting for details to be confirmed."
DFAT did not confirm the men were dead.
The Australian Government warns travellers to "exercise a high degree of caution" when travelling to Mexico.
It also lists three regions as "reconsider your need to travel", but none include the Sinaloa region where the van was found.