DENVER -- Two armed men wearing bandanas over their mouths, and hoods over their heads, walked into Elevated Medical at 3660 Downing St. and robbed the store Tuesday night.

The gunmen locked two employees in a back bathroom, and then took undisclosed amount of medical marijuana, police said.

The robbers took off in an unknown direction and it was not know if they left by foot or by vehicle, police said. No shots were fired and no injuries were reported.

One of the robbers accidentally dropped a gun outside of the dispensary as they fled the store, police said.

The incident remains under investigation.