Affidavit: Suspect who dragged WilCo deputy tried to kick her out of moving vehicle

22-year-old Jonathan Nunnally is charged with aggravated assault against a public servant in connection to the dragging of a WilCo deputy during a traffic stop early Wednesday morning. (Photo: Williamson County Jail)

As a Williamson County deputy was being dragged by a suspect after he tried to flee a traffic stop, she thought about the death of Hutto Police Sergeant Chris Kelley, who was killed after being run over by his own vehicle after a struggle with convicted murderer Colby Williamson in 2015.

The dragging was caught on dashcam video, and Deputy Tabytha Horseman's thoughts are detailed in an affidavit filed in the Williamson County Courthouse.

According to that affidavit, Deputy Horseman made the traffic stop after she observed the suspect, 22-year-old Jonathan Nunnally, sit through two entire traffic light cycles.

Nunnally appeared to be passed out, and when Deputy Horseman opened the car door, he awoke and took his foot off the brake pedal slightly, causing the car to roll.

She told him to stop the vehicle and remove the keys from the ignition, which he did, and she placed them on the roof of the car.

The deputy says she asked Nunnally for his license and insurance, at which time she could smell alcohol and marijuana emitting from the vehicle.

Nunnally asked the deputy "Is anyone else coming?" and when she said no, he told her he didn't have his driver's license and took a second set of keys from his pocket and put the key in the ignition.

Deputy Horseman says she asked him to hand her the keys, but he did not comply, according to court doucments. The deputy says she saw him step on the accelerator and put the car in drive, at which time she was unable to remove herself safely from the vehicle.

The affidavit states that Nunnally kicked Horseman several times in the legs in order to throw her out of the vehicle. Horseman says he then moved his body to the passenger seat in an attempt to get more leverage, yelling "Get out!" as he kicked her.

The deputy, in fear of her life, considered using her firearm but instead punched Nunnally in the face and yelled "stop!" several times. When he didn't comply, Horseman used her taser on his back, which caused him to stiffen up. She was then able to place the car in park.

A backup deputy arrived on the scene and placed Nunnally in handcuffs.

In the affidavit, Horseman says "I know that another peace officer in Williamson County died as a result of a situation very similar to this," a reference to Sgt. Kelley's death in 2015.

Nunnally is charged with aggravated assault with a deadly weapon against a public servant.

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