Propst was charged with grand theft and criminal mischief, and appeared in court Tuesday. On Wednesday morning, police say, he took his aunt's car to Parker Elementary school, stole another bus, and then drove it for more than two hours.
He was eventually caught in Franklin County.
"When we were advised that it was the same juvenile driving the bus that had been responsible for the last bus theft from Parker we said 'No way,'" Chief Sweatt added.
But police say it was Propst, and it seemed like his driving had improved since his last outing in a bus. WMBB reports the boy's 55-mile route would have taken him through an area where traffic signals were down and police were directing traffic, but he managed to avoid being stopped.
Propst is now back in police custody, facing additional charges.
"He's not unruly or resists arrest or anything of that nature from what I understand," said Sweatt. "He's just into stealing vehicles."