Washington State University researchers are working to develop a breathalyzer that will instantly detect THC, the active ingredient in marijuana, and illegal substances. KHQ's Cynthia Johnson reports.Dec. 4, 2014
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Pole footage shows Memphis police holding up Nichols as officer punches him
01:06
New York City protests erupt after release of Tyre Nichols video
02:33
Memphis Police release video of deadly Tyre Nichols beating
08:30
Memphis bodycam appears to show Tyre Nichols being pepper-sprayed, calling for mother
05:16
Pole video appears to show Tyre Nichols being beaten by multiple Memphis officers
05:19
Family of Tyre Nichols says Memphis officers smoked cigarettes after deadly beating