Kylr Yust's half-brother is in custody in Benton County Jail. Jessep Carter is being held on four warrants in Benton County.

Carter also faces charges in Henry County from a traffic stop that took place on the same day police found Jessica Runions’s burned car in Kansas City.

Carter is charged with resisting to stop, driving without a valid license and without proof of insurance.

According to court records, a sheriff’s deputy spotted a pick-up truck driving erratically in the 400 block of Northeast 2 Highway in Windsor on Sept. 10, 2016.

When the deputy tried to pull Carter over, he allegedly sped away going over 70 mph.

"They were exceeding the speed limit, there were some lane violations--crossing the center line and onto the shoulder," Henry County, Missouri Sheriff J. Kent Oberkrom told 41 Action News Thursday.

When the sheriff’s deputy pulled over the pick-up in the 1000 block of Northeast 2 Highway he found Carter, a woman with a handgun in the passenger seat and Yust seated in the back, the probable cause statement says.

Eighty-five miles away that same day, the family of Jessica Runions learned KCPD officers had found their missing daughter's SUV burned.

"There was nothing in the system, nothing in the state computer system that alerted us that these people were wanted for anything any different than the traffic violation which we had and the weapons charge on the female," Oberkrom said.

One day later, police arrested Yust at a trailer in Benton County and charged him with torching Runions's SUV.

Witnesses said Runions was last seen leaving a house party with Yust.

Earlier this month, a mushroom hunter discovered Runions's remains in a field in rural Cass County. That prompted the Henry County Sheriff's Office to look back at the September traffic stop.

"Just to see if there was anything else that might be of benefit in that maybe something that was overlooked and talked to the officer that made the stop. Although there wasn't anything else unusual; we did discover there are possibly some other traffic charges that could be filed against mister Jessep so we did a probable cause statement and got that up to the prosecutor," Oberkrom said.

Henry County Prosecuting Attorney Richard Shields declined to comment on the case but has requested Carter be held on a $20,000 bond.