Police have been alerted after a swastika was found carved into a pavement in Stamford Hill.
Shomrim, the Jewish neighbourhood watch group, contacted officers after the Nazi symbol was discovered close to a synagogue.
Witnesses have been urged to call the police with information.
Over the past week, a spate of swastikas printed on posters have appeared in a children’s playground in Stamford Hill.
Shomrim said it was "the first co-ordinated and repetitive act of antisemitism the area has ever seen".
