EDITOR'S NOTE: The earlier version of this story stated that Laurie Stout was killed on UT campus. The story has been edited to reflect that she was killed in an office building off campus.

A former University of Texas at Austin student who is accused of killing a female janitor and leaving her in the men's restroom in a South Austin office building back in 1983 has been added to the FBI's Most Wanted list, according to the Austin Police Department and the FBI in a joint press conference Tuesday.

According to the FBI, Robert Francis Van Wisse was in the building located at 3816 South 1st Street registering for a course. Sometime that same night, a female janitor was cleaning the building. She was found at around 8:27 a.m. on Sept. 20, 1983 in the men's restroom of the office building. The woman, who was also a wife and a mother of a 1-year-old girl, died of asphyxia due to strangulation and suffocation with a wire.

Van Wisse was the last person seen in the building before the killing, authorities determined. They believe Van Wisse fled the Austin-area when he learned that he was a murder suspect.

On Oct. 3, 1996, a state arrest warrant was issued from Van Wisse. On March 6, 1997, Van Wisse was also charged with unlawful flight to avoid prosecution and a federal warrant was issued for him.

He has now been added to the FBI's Most Wanted list. He has ties to Austin, but may live in South America, Mexico or the United States under an assumed name.

"With the work of all of the people here today, they have a very high success rate of being able to capture him and it's going to happen within a matter of days or months," Laurie Stout's daughter, Daile Stout, said.

"Somebody asked me how are you going to feel if they catch this guy and you'll be able to have happiness, I don't know what that feels like but I want it," Laurie Stout's sister, Beverly Casaubon, said.

Van Wisse stands at 5-feet 6-inches, weighs 180 pounds, has brown hair and speaks English and Spanish. He was previously employed as an English teacher in Mexico and now may be employed in the medical field or could be working on a coconut and banana plantation in Mexico.

Anyone with information on Van Wisse is asked to call the FBI tip line at 1-800-225-5324.

Here is the FBI poster for Van Wisse:

Former UT student linked to 1983 killing added to FBI list by kvuenews on Scribd

Here is the full press conference from Tuesday detailing the killing and Van Wisse's possible whereabouts: