COLORADO SPRINGS, Colo. - Investigators in the Kara Nichols disappearance have confirmed that the missing teen did not post the escort ads that recently surfaced in Las Vegas, KRDO-TV reported.

The ads featured photos of Nichols, but detectives said they have learned the website pulled old pictures of Nichols from the Internet.

"In speaking with authorities from the Las Vegas area, they say that it's quite common for escort businesses to simply shop around on the Internet and find photos like that," El Paso County Sheriff's Lt. Jeff Kramer told KRDO-TV.

When 7NEWS reporter Marc Stewart called the number on the ad, the woman on the other end was less than eager to talk.

"Honey, I don't know who you are," she said and eventually hung up.

"Hey…I'm Star -- I'm the ONE you have been looking for!" says the ad with an email link for "702hotgirl," using the area code for Las Vegas. "I love to cater to upscale gentlemen who are looking to be treated like a man should be!...Unrushed, with a sweet sensual pleasing personality!"

Nichols, 19, was last seen in Colorado Springs. She has not been heard from since Oct. 10 when it was believed she was heading to Denver for a modeling job.

Earlier this month, investigators said the woman's eagerness to break into the modeling business may have "caused Kara to fall prey to a subculture of modeling business fronts that many times involve illicit drugs and prostitution."

"This subculture could have exploited a teenage girl who may have lacked the life experience to see the inherent risks. Our investigators have uncovered several websites which are not the cause of Kara's disappearance, but sites which relate to this subculture," sheriff's officials said.

Anyone with information about the case is asked to call the El Paso County Sheriff’s Office at 719-390-5555 or email tips to findkaranichols@gmail.com.