Officers were called out to Fay Mart in the 3300 block of Howard Avenue around 9 p.m. Wednesday.
Authorities are still investigating, but they say one or more people came into the store and demanded cash from the clerk.
They left empty-handed, and no one was hurt.
Police are unsure if a weapon was used.
This latest incident follows two knife point robberies, a Mac’s on Monday evening and at a Petro Canada Gas Station the following night.