NEW BRAUNFELS, Texas – It has been over three decades since Carol Deleon, 18, was found dead on the side of Interstate 35 outside New Braunfels.
"The manner that she was found was horrifying," said Nancy Duran, Deleon's sister.
Thirty-four years have passed, but Deleon's family has never stopped seeking justice.
Deleon’s body was found on June 4, 1981 after being shot multiple times. At the time she had no identification and was listed as a Jane Doe. It was not until 2009 new DNA technology identified her.
"I didn't believe it was her. To this day I don't believe it. I expect that she's out somewhere out there working," Duran said.
Prior to her death, Deleon had graduated from Thomas Edison High School and is believed to have been at a nightclub on June 3.
Authorities are looking for the man in the picture above, and believe he may have been with Deleon.
For the next 30 days DPS and Crime Stoppers has increased the reward, to $10,000, for information that leads to the person or people responsible for Deleon’s death.
Duran believes finding the person responsible would help her 75-year-old father find closure.
"My dad and my sister were very close. So this has been very hard on him. So like I said we would like to get answers to help him," said Duran.
Anyone with information about this unsolved case can also submit a tip through the Texas Rangers’ Cold Case website or contact the Missing Persons Clearinghouse at 1-800-346-3243.