An unknown London man carried out an unprovoked anti-Semitic attack in Hackney on Sunday against a group of Jewish children, throwing a glass bottle them and shouting anti-Semitic abuse.

The incident took place at around 7pm on Sunday when the Jewish girls, aged between 8 and 16, were outside their home in Hackney. A man approached them and hurled a glass bottle at the girls before shouting “Hitler is a good man; good he killed the Jews”.

The terrified girls escaped their assailant by running into their home.

“This was a terrifying experience for the young victims who were targeted in this unprovoked antisemitic attack,” said Chaim Hochhauser from Stamford Hill Shomrim to the Jewish Chronicle.

“Shomrim will continue to assist and support the victims. There have been many antisemitic incidents in Stamford Hill recently, and it just seems to be getting worse.”

The Metropolitan Police said: “The suspect is described as a male in his early twenties, with a slim build and wearing a black t-shirt, black trousers and  a black cross body bag.”

“Officers would like to hear from anyone who might have witnessed this incident. Anyone with information is asked to contact 111 or Crimestoppers anonymously on 0800 555 111. You can also tweet information to police @MetCC.”

Also this week anti-Semitic graffiti was discovered at the entrance of a Jewish school in Stamford Hill. Separately anti-Semitic graffiti was scrawled on a public advertising board in Birmingham.

Anti-Semitic incidents in the  UK are up 30% in the first six months of 2017 compared to the first six months of 2016.