MEXICO CITY: Argentine forensic experts who have studied a dump in southern Mexico where government officials claim the bodies of 43 missing students were burned said Saturday that results from a new investigation of the site are incomplete and inconclusive.

The Argentine Forensic Anthropology Team released a statement saying the latest investigation by a team of independent experts “neither confirms nor denies” the official version of what happened to the students from the Rural Normal School at Ayotzinapa, a teachers’ college.

The Argentines were called in shortly after the students disappeared in Iguala in Guerrero state on Sept. 26, 2014. A federal investigation concluded they were killed by a local drug gang after being confused with members of a rival group. They were purportedly abducted by corrupt local police and handed over to the gang, which incinerated their bodies at a dump in the nearby town of Cocula and threw the remains into a river.

The Argentines — who were brought in at the request of the students’ families and worked with government investigators — studied the dump and said first in January 2015 and later in a full report released in February 2016 that the evidence did not support the official version of events.

In September 2015, another team of independent experts sent by the Inter-American Commission on Human Rights, or IACHR, released a report that dismantled the government’s investigation. The report explained how state and federal police, as well as the military, were monitoring the students’ movements before they were attacked.