Court documents reveal new details about the HSI investigation into the employment practices of several Zipps Sports Grill ...

"Federal officials have not shared details regarding the nature of the investigation, and no charges or allegations have been ...

A copy of the first page of the federal warrant says agents were at Zipps "for the purpose of interrogation and civil ...

Agents from Homeland Security Investigations (HSI) are inspecting workplaces in Tucson, asking for proof of citizenship of employees.

12News has reached out to Zipps and to HSI, but has yet to receive any further information following Monday's raids.