EDINBURG – Authorities confirm the security guard who shot and killed two suspects at an illegal gambling establishment in Edinburg was an employee of a security guard company.

The Hidalgo County Sheriff's Office also warned a third suspect in the crime remains unidentified and at large.

Jaime Ochoa owns a security company in the Rio Grande Valley.

He told CHANNEL 5 NEWS companies don't necessarily have to know what's happening inside an establishment to do their job.

"When someone hires us to protect their assets, it's their business. They know what they want us to protect," said Ochoa. "If they're in boxes or whatever is in closed doors, we're not there to audit their equipment. We're there to protect them from people stealing it from them."

He said their services aren't limited to businesses. Just about any property can be guarded.

"It can be anybody that's willing to pay for the service of protection," said Ochoa.

Ochoa claims companies first reach an agreement with the party requesting their services. They then do their job.

He said guards could be indoors, outdoors, or both, depending on the job description.

"If they want us to check records, if they want us to check people in and out, whatever duties would be entered in the contract, we sign for the contract. And then we're obligated to do the job as per the contract," said Ochoa.

The private security profession in the state of Texas is regulated by the Department of Public Safety. According to the agency’s website:

"DPS protects the public by conducting fingerprint-based background checks on applicants, licensing training schools and instructors, investigating and resolving complaints, and taking disciplinary action against licensees or seeking criminal prosecution of those who perform private security services without a license.”

The sheriff’s office added the specifics of this case are still under investigation.