Four police officers conducted a thorough search. When they came up empty-handed, the stop still didn’t end. Radley Balko analyzes the next part of the video at the Washington Post:

After the search of the car comes up empty, Medlin tells the female officer to “search her real good,” referring to Hicks. The personal search of Hicks is conducted off camera, but according to the complaint filed by Phillips, it allegedly involved exposing Hicks’s breasts on the side of the road in a populated area. The complaint also alleges that this was all done in direct view of the three male officers. That search, too, produced no contraband.

The officers then turn their attention to Pontoon. Medlin asks Pontoon to get out of the car. He cuffs him and begins to pat him down… he tells Pontoon: “You’ve got something here right between your legs. There’s something hard right there between your legs.” Medlin says that he’s going to “put some gloves on.”

The anal probe happens out of direct view of the camera, but the audio leaves little doubt about what’s happening. Pontoon at one point says that one of the officers is grabbing his hemorrhoids. Medlin appears to reply, “I’ve had hemorrhoids, and they ain’t that hard.”

...the audio actually suggests that two officers may have inserted fingers into Pontoon’s rectum, as one asks, “What are you talking about, right here?”

The other replies, “Right straight up in there.”

Pontoon then again tells the officers that they’re pushing on a hemorrhoid. One officer responds, “If that’s a hemorrhoid, that’s a hemorrhoid, all right? But that don’t feel like no hemorrhoid to me.” The officers apparently continue to search Pontoon’s rectum for another three minutes. They found no contraband. At 12:50:25, Medlin tells Pontoon to turn around and explains that he suspects him because he recognized him from when he worked narcotics. “Now I know you from before, from when I worked dope. I seen you. That’s why I put a dog on the car.”

That was Medlin’s “reasonable suspicion” to call for a drug dog — he thought he recognized Pontoon from a drug case. Medlin could well have been correct about recognizing Pontoon. He has a lengthy criminal history that includes drug charges, although his record appears to be clean since 2006, save for one arrest for “failure to comply.” Of course, even if Medlin did recognize Pontoon, that in itself isn’t cause to even stop him, much less search his car, or to subject him to a roadside cavity search.

With no contraband and no traffic violation to justify the stop in the first place, Medlin concluded the stop by giving Hicks a “courtesy warning,” although according to the complaint, there’s no indication of what the warning was actually for.