Zafar Padamsee Mawani and Guillermo Jaffet Hidalgo Ortiz had not been seen since late May.
ABC7 spoke to Jaffet Hidalgo Ortiz's niece, who said the married couple just moved from Chicago to Mexico in October. They were living in a neighborhood in the far southern part of Mexico City.
The men were apparently going to get equipment from an alleged contractor for an elderly mother with Alzheimer's before they went missing.
More information was not immediately available.
This is a developing story; check back with ABC7 Chicago for updates.