The posters, which read "No Muslim parking in the Westview Shopping Center," were seen in recent days outside the mall, which sits across the street from a mosque, a local television station reported.
Some speculated that the signs were put up to avoid large crowds expected at the mosque during the holy month of Ramzan. Several mall employees privately expressed frustration with mosque members occupying parking spots meant for shoppers, the 'Wahisngton Times' reported.
"I'm very shocked because we do live in a society that's supposed to be very accepting and this is what we all preach," one worshipper said.
The posters have since been removed and police has launched an investigation into the matter.