An East Tennessee man could spend decades behind bars after pleading guilty to armed robbery charges.
37-year-old Brian Mullins pleaded guilty Tuesday to robbing the Sanitary Drug Store in White Pine with a handgun back in March.
Officials say Mullins ordered the pharmacist to the ground and asked where he kept the oxycodone pills.
The pharmacist gave Mullins some pills and he ran out the door.
Police chased him through several counties before arresting him.
Mullins faces a maximum penalty of 20 years in prison, a $250,000 fine and three years of supervised release.
His sentencing is set for September.