A team of investigators was back at Midlothian's Creekside Church of Christ Thursday night trying to learn more about the person who killed fitness instructor Missy Bevers.
Bevers, 45, was attacked and killed inside the church before she was set to teach an early-morning Camp Gladiator workout class.
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Midlothian Assistant Police Chief Kevin Johnson said investigators hoped to gain better insight into the person caught on camera roaming the halls of the church in the moments before Bevers was killed.
Investigators were to examine the person's unique characteristics, including their exact height.
The team includes certified forensic video investigators. According to NBC 5 Law Enforcement Expert Don Peritz there are only 54 in the country, and two work at the Tarrant County District Attorney's Office.
There's no timeline on when that work will be complete.