Testimony from Lubbock police challenged Mickey Patterson's alibi on Wednesday as Detective Billy Koontz addressed the jury.
In a previous interview with lead detective Harry Feldman, Patterson said on the day Kay Harrelson and Peggy Merimon were last seen alive he defecated in his pants, cleaned himself up, and picked up a prostitute named Rachel.
Koontz told the jury that officials found dirty men's underwear and a pair of shorts just one mile away from Harrelson's body. The jury will have to wait for DPS labs to find out if there was a DNA match.
Koontz found that a prostitute named Rachel was arrested on July 31, so Patterson could not have been with her on Aug. 9, 2006.
The defense said that there may have been multiple prostitutes named Rachel in Lubbock at that time.
Several state school employees took the stand on Wednesday and spoke about his demeanor on the day the two women went missing.
Former state school employee Vicki Johns said Patterson was a "user."
"He would date lots of women from the state school, get what he wanted, and then move on to the next one," Johns said.
Johns also said Patterson changed after his divorce in 2006. "He was withdrawn, reclusive, cranky, and very short tempered," Johns explained.
Several state school employees say Patterson was supposed to attend a DPS meeting on the afternoon the women went missing.
Several days after the women went missing, Johns said Patterson was worried and seemed nervous.
"I told him, 'Why are you worried? You have an airtight alibi. You were at the DPS meeting.' and he responded 'I didn't go to the meeting, I was sick,'" Johns said.
State school employees say he did return to work for a day and a half after the women went missing.
Patterson's ex-wife Sherri Lewis also testified that he asked her to participate in bondage sex acts and threatened to kill her many times.
The Jury was shown four short surveillance videos of Patterson driving into his residence at Commander's Palace at 12:03 p.m. on August 9, 2006, the afternoon the women went missing. The video shows two women in the car with Patterson, police said.
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