Three men have been arrested and bailed after Jewish shoppers were reportedly pelted with gas canisters and had "Hitler is on the way" shouted at them.
The anti-Semitic incident is alleged to have happened at Tottenham Hale Retail Park, north London, at around 7.45pm on Wednesday, while the suspects were in a pick-up vehicle.
Jewish neighbourhood watch group Shomrim said they had been contacted by one of the victims who claimed a man in the vehicle also shouted "Heil Hitler", according to reports.
Scotland Yard said three men, aged 24, 22 and 18, were arrested on suspicion of a religiously aggravated public order offence and have been bailed to a date in late February.
All three suspects came forward to the police and remain in custody, the force said.
Anyone with information on the incident is asked to call the police on 101 or anonymously to Crimestoppers on 0800 555 111.