Story highlights Dean Lucas and Adam Coleman, both 33, were on a surf trip from Canada

Remains were found in a van registered to Coleman in Canada

Suspects were part of gang who robbed motorists in Sinaloa, authorities say

(CNN) The bodies of two men found in a burned-out van in Mexico's Sinaloa state are exactly who authorities feared they were: Australian surfers Dean Lucas and Adam Coleman.

Sinaloa Attorney General Marco Antonio Higuera confirmed during a Tuesday news conference that the bodies had been identified via a DNA test. The men, both 33, have been missing since last month.

Authorities have made three arrests but are still seeking two men in connection with the case: Julio Cesar Gonzalez Muniz and Jesus Uriel Camacho Labrada, Higuera said.

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The three suspects in custody were low-level drug dealers who had been robbing motorists on a stretch of road leading south through the Sinaloan city of Navolato, Higuera said previously.

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