The International Organization for Migration (IOM) collects data on the destinations of migrants worldwide before they are reported missing or deceased.
The IOM reports that over 8,700 people have died or gone missing on unidentified migration routes since 2014.
Based on this data, the IOM assesses that while more resources are needed to track migrant worker deaths in all destination areas, it is crucial to target areas with limited information or resources.
"Because deaths are so unlikely to be documented in areas where migration risks are less known," the IOM wrote in its report.
At least 10 top routes or destination areas for migrant workers have been identified before they went missing or died between 2014 and 2022.
The highest number of identified cases was in the Central Mediterranean, reaching 20,122 people. Second was the Sahara Desert, with 5,620 people.
Third was the US-Mexico border with 4,133 people. Fourth and fifth were West Africa/Atlantic and the Western Mediterranean, with 2,976 and 2,829 people respectively.
The IOM report draws from various reports from local authorities, NGOs, eyewitness accounts of migrant deaths, and media reports.
"While this approach, the fact that currently no country produces data on deaths during migration, means that many deaths and disappearances during migration remain undocumented," the IOM wrote.
The following are the 10 areas identified as the last known location before cross-border migrant workers were reported missing or deceased:
* Central Mediterranean: 20,122 people
* Sahara Desert: 5,620 people
* US-Mexico Border: 4,133 people
* West Africa/Atlantic: 2,976 people
* Western Mediterranean: 2,829 people
* Eastern Balkans: 2,162 people
* Afghanistan-Iran: 1,192 people
* Horn of Africa-Yemen: 1,009 people
* Dominican Republic-Puerto Rico: 285 people
* Western Balkans: 280 people