Immigration and Customs Enforcement (ICE) is allocating as much as $180 million to pay bounty hunters and private investigators who verify the address and location of undocumented people ICE wishes to detain, including with physical surveillance, according to procurement records reviewed by 404 Media.

The documents provide more details about ICE’s plan to enlist the private sector to find deportation targets. In October The Intercept reported on ICE’s intention to use bounty hunters or skip tracers—an industry that often works on insurance fraud or tries to find people who skipped bail. The new documents now put a clear dollar amount on the scheme to essentially use private investigators to find the locations of undocumented immigrants.

“I am sure PIs, bounty hunters, process servers, and anyone with access to commercial databases can apply and will,” Igor Ostrovskiy, an experienced private investigator with Ostro Intelligence, and who expressed concerns with ICE’s plans, told 404 Media. “Money is money and people will jump at the opportunity to embed their business as a government contractor.”

The documents are part of a package published by ICE on Monday. They say ICE is seeking assistance with a “docket size” of 1.5 million, in which the agency will give vendors a batch of 50,000 last known addresses of aliens residing in the U.S. The bounty hunters are then to verify the people live at those addresses, or find their current location, and provide that information to ICE’s Enforcement and Removal Operations (ERO). ICE says bounty hunters are to start with online research such as Google or commercial data, before moving onto physical surveillance.