Karla and her brothers, Eddie Martinez and Justin Martinez, disappeared from North Hills, California on April 14, 2009. Authorities believe they were abducted by their non-custodial mother, Karla Trejo, and their non-custodial father. Trejo's date of birth is March 20, 1980, making her 29 at the time of the alleged abductions. Photographs and additional information for her are unavailable, and there are no photos or any information for the father.

Photographs for either of the two boys are unavailable. Eddie's date of birth is November 12, 2004, making him four years old at the time of his disappearance. He is described as a Hispanic male, with black hair and brown eyes. Justin's date of birth is November 30, 1996, making him twelve years old. He is a Hispanic male with black hair and brown eyes, 5'5 and 120 pounds.

The children's parents may have taken them to Mexico. Their whereabouts are unknown and their cases remain unsolved.