before they left this world. they really did. they made a large impact on a lot of people. a beefed-up multi-agency task force vowed to catch whoever killed the mcclellands and mark hasse. investigators had seen that ford crown victoria on video roaming near the mcclelland home and thought it might be a police car. the terrible possibility it might be one of their own had to be ruled in or out immediately. we checked with every law enforcement agency in the area and identified where every police car was in the area. and none of them were even close to where this image was captured. next, they looked for anyone who for any reason had issues or disputes involving both prosecutors. there didn t seem to be anybody in that group of people that were upset enough that they would want to commit homicide. but there was one defendant involved in a felony they couldn t ignore. there was only one common denominator for those two prosecutors. which was? that was eric williams. e
those are gunshots, we need to go. we packed up real quick and hopped in the car. the car camera was rolling, as he and his partner drove toward the gunshots. about halfway over a man had been shot, and give us a location. we ve got a gentleman on grove street and madison that just got shot. that s just a block from the courthouse. shannon noticed that her secretary was looking out the window at some commotion on the street. my secretary turned around and she was crying. initially, i wanted to comfort. i couldn t imagine she was crying about. when she turned from the window, she said, it s mark. mark cassie, her friend and colleague. my natural instinct was that he had been hit by a car. she said no, he was shot. who is it? oh my god, it s mark hasse-y! coming up, get you another
time of the murders. no one in the neighborhood owned a car like that. but the crown vic model is popular with law enforcement. so the fbi jumped on that angle. was there ever a thought that maybe this is one of our own? maybe this is a police officer doing this? that was not out of the realm of possibility. coming up investigators recheck the cases handled by mark hasse, this time to see which ones mike mcclelland also worked on. and there was only one common denominator for those two prosecutors. which was? when dateline continues. (coughing) breeze driftin on by you know how i feel copd may have gotten you here, but you decide what s next. start a new day with trelegy. .feelin good no once-daily copd medicine has the power to treat copd in as many ways as trelegy. with three medicines in one inhaler, trelegy helps people breathe easier
on law enforcement, in a small town. nbc five ken says the suspected murder ending up in texas was especially intriguing to investigators. it made people wonder if perhaps there could be some connection with the hasse murder. they did tests on suspect evans weapon. his bullet was identical to what killed the prison chief back in colorado. but then they found out that it was not the weapon that killed mark cassie. and what is more he was deemed to have not been kaufman at the time that cassie was killed. so so it weeks in, the cassie case was going nowhere. we were leading with the investigation. the command post was shut down, leaving just a small group to work full-time on the case. suddenly, we kind of trickled back to our daily duties.