Police are working to identify the man who robbed a pharmacy Sunday in the 1400 block of Madison Street in Clarksville.
Investigators said the man entered the store around Noon and handed the female employee a note demanding drugs. He also told the woman "not to mess around."
The man fled after he was given an undisclosed type and quantity of drugs valued around $400.
Officers combed the area and a police dog was brought to the scene but the suspect was not located.
The suspect is described as a white male in his early 20s. He was wearing a dark hooded sweatshirt, jeans and a knit cap at the time of the robbery.
Anyone with information should call Clarksville police at 931-648-0656 or the police department's tips line at 931-645-8477.