“It is unusual to go back and refine a suspect drawing,” said Chief Randy Wright. “But in this case, our eyewitness sustained a brain injury that initially affected her ability to communicate effectively. The good news is she has made exceptional progress. Her sight and speech have improved and she can now interact with the artist much better.”
The night they were shot, Chapa, 18, and Olgin, 19, had planned to spend some time in the park before seeing a movie, Olgin’s father, Mario, told local television station kiiitv.com
They were found by a couple the next day in a grassy area of the park with gunshot wounds to the head. Olgin, a first-year university student living in Corpus Christi, died; Chapa, of Sinton, was alive and rushed to an area hospital.
Police recovered a bullet casing from a large-caliber gun at the scene, leading investigators to believe the shootings occurred where the pair was found. Two witnesses said they heard what could have been gunshots or firecrackers just before midnight on June 22 but did not report it at the time.
Wright has previously said that there was no evidence to indicate the attacks were motivated by the couple’s relationship. He did not immediately respond to an email on Saturday asking if police had established a motive, which they earlier said they had not.
The FBI was also helping to investigate, and Chapa was working with authorities to reconstruct the crime scene, Wright said.
“She wants very badly to help us identify Mollie’s murderer,” he said.
The description of the suspect has not changed, Wright said. He is described as a thin white man with a scruffy beard, in his 20s, weighing 140 pounds and standing 5-feet-8-inches tall.