It happened at the Smokerz Outlet on Frederick just before 1:00 p.m.
Police say a man walked into the store and asked to buy a cell phone.
Surveillance video shows the man talking to the clerk then reaching over the counter and grabbing cash from the register.
The suspect was not armed.
If you recognize the man, call the TIPS Hotline at (816) 238-TIPS.
Copyright 2016 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.