(JTA) — Fliers were hung in the Oakland neighborhood of a Jewish city councilwoman with a swastika drawn on her forehead.

The fliers were hung throughout the Montclair district represented by Councilwoman Libby Schaaf. The fliers read “Stop Schaaf. Stop the DAC, “a reference to a city plan to build a combined surveillance center for police and fire fighters.

Schaaf, who reportedly plans to run for mayor in November, told the Bay Area News Group that she was surprised to be targeted over the issue, which she has been critical of, despite continuing to vote to go ahead with the project, as have a majority of council members.

“As a person of Jewish heritage I found this particularly hurtful. As an Oaklander I found it shameful,” said Schaaf, according to reports.

Police are investigating the incident, which was first reported on Sunday. It is not known if it is being investigated as a hate crime.

By midday on Sunday, most of the posters were torn down, or had the swastikas covered with black marker.

Last year, similar posters with swastikas targeted a Latino councilwoman.