Minneapolis is set to host the Super Bowl in February, and lawmakers want to know why officials at U.S. Bank Stadium hired a security company that had to be fired last month.
An internal investigation discovered Monterrey Security hired workers with criminal backgrounds and overcharged for its services.
Detectives who helped with the investigation told a state house committee on Thursday that officials missed plenty of red flags.
"Yes, there was a Monterrey Security officer that actually was wearing an ankle bracelet because he was making terroristic threats to the FBI," Greg Cook of the Minnesota Board of Private Detectives and Protective Agents said.
The stadium hired two new firms to take over security after the violations were revealed last month.