COLORADO SPRINGS, Colo. (CBS4)- Investigators said their search for a missing Colorado Springs teenager has led them to Las Vegas.

Kara Nichols is an aspiring model. She disappeared from Colorado Springs two months ago.

Investigators have received several tips that a picture of Nichols, 19, is being used in advertising for an escort service in Las Vegas.

The teenager’s parents said they have no proof that she is in Las Vegas and want people to keep searching.

Nichols was last seen by family and friends leaving Colorado Springs for Denver on Oct. 9.