A man in his 50s was arrested in London on Thursday after allegedly shouting Nazi abuse and threatening Jewish passengers on a bus in Hackney, police said.

The incident happened at about 3:45 p.m. on a Route 254 bus near the Stamford Hill area, home to one of Britain’s largest Jewish communities. According to Shomrim, the Jewish neighborhood watch group, the suspect shouted at Jewish passengers, “It’s a shame Hitler didn’t kill you” and “You should all go to the gas chambers.”

He also allegedly threatened to kill Jewish children and claimed he had a knife. The bus driver stopped the vehicle and activated the emergency alarm, while Shomrim volunteers and members of the public intervened. Volunteers detained the suspect until police arrived.

The Metropolitan Police said the man was arrested on suspicion of threats to kill and public order offenses. Police said the incident is being investigated as an antisemitic hate crime. Officers searched the suspect and said no weapon was found.

Transport for London condemned the incident. “No-one should ever have to fear or experience abuse when using our network,” said Siwan Hayward, TfL’s director of security, policing and enforcement. The London arrest came after a separate incident Wednesday night in Salford, near Manchester’s Jewish community, where a man in his 60s was arrested over alleged antisemitic threats.

The arrest came as London police moved to create a new 100-officer Jewish protection team, combining neighborhood officers with counterterrorism specialists, after a sharp rise in antisemitic incidents. The Met said around 50 people had been arrested for antisemitic hate crimes in the previous four weeks.