Shomrim has alerted police to swastika posters found distributed across a children’s playground in Stamford Hill.
The Jewish neighbourhood watch group have urged witnesses to call the police with information.
Board of Deputies vice president, Marie van der Zyl said: “The daubing of Nazi symbols in a place where Jewish children study and play is an act of racism intended to spread fear and alarm.
In a week when the Board of Deputies has given evidence at the Home Affairs Select Committee’s inquiry into the rise of antisemitism, this is an example of one of the many threats the Jewish community faces. We hope the perpetrators will be apprehended and made to feel the full force of the law.”