NASHVILLE, Tenn. -- Some of Nashville's most vulnerable citizens lived under the watchful eye of a convicted sex offender, the I-Team reported on Thursday.

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The man was a paid security guard who was hired to guard a Metro building. He is no longer employed as a security guard.

Vine Hill Apartments are specifically designed to house low-income Nashville residents who are elderly or disabled. The apartments had an overnight security guard on staff, but the I-Team reported that he may not have been so safe.

"Well, we're very upset about it. We weren't aware ahead of time that he had this type of a record," said MDHA representative Jerry Seay.

Everett York, who spent four nights a week guarding the apartments, is a convicted sex offender. On Thursday, he was arrested again on suspicion of an aggravated assault that happened at work two weeks ago.

"It's very serious, because we're expecting people there to be reputable people that are there to try to guard our residence, so it's kind of hard to understand," said Seay.

How did York get hired? He is listed on the state sex offender registry, and the security company KRC that provides guards for every Metro Development and Housing Agency high rise hired him anyway, the I-Team's Jennifer Johnson reported.

"If I'd have known any way possible this guy was a registered sex offender, I mean, you know, we would have never, ever, ever hired this guy," said owner Michael Kinnard.

But, according to the I-Team's report, York never applied for a security guard license. There could have been other serious charges in his record, and KRC Security would have never known.

"Normally, I don't even hire unless they've already got the license. This guy said he'd already applied and what not, and we have done that in the past," said Kinnard.

Metro officials said they are now concerned about how many other illegal guards are working and what kind of threat they may pose to Nashville's most vulnerable citizens.

"We're looking into our entire process now. We haven't made any decisions about how we're going to proceed in this case," Seay said.

Not only has York not applied for a license but late on Thursday, the I-Team reported that it discovered that KRC Security's license expired in April. The expiration means that there's no oversight over the company that provided guards to more than 1,200 Metro housing units.

Police said they are looking for a second man, Henneth Patterson, charged with York in connection with a recent assault.

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