Federal auditors are reviewing a project in which the federal government's spent $12.8 million to build 21 homes for Border Patrol agents in a remote southern Arizona desert town.

The Arizona Republic reports that the Ajo project's price tag of more than $600,000 per home has drawn fire from real-estate agents.

There's also been criticism and questions about the project from members of the state's congressional delegation.

Auditors from the Office of Inspector General of the Department of Homeland Security on Thursday visited Ajo to interview residents, real-estate agents and Customs and Border Protection officials.