Those responsible will be brought to justice."Speaking in parliament, he called the incident "deeply concerning"."There is now a police investigation, and I think we all need to do everything we can to support that investigation and be absolutely clear in our determination to deal with any of these offences, the like of which we've seen too much recently," he said.Head of Counter Terrorism Policing Laurence Taylor said, while the investigation was at an early stage, officers "were working quickly to understand exactly what happened".In a statement, the Metropolitan Police said: "We are working to establish his nationality and background."Specialist officers from Counter Terrorism Policing are leading the investigation and working with the Metropolitan Police to establish the full circumstances and any links to terrorism."Detective Chief Superintendent Luke Williams, who leads policing in the area, said investigators were considering all possible motives.London Mayor Sadiq Khan said the two victims were Jewish Londoners and that he was in close contact with police over the "appalling attack"."London's Jewish community have been the target of a series of shocking antisemitic attacks," he said on X."There must be absolutely no place for antisemitism in society The suspect has been detained," she said in a statement on X."The attacks on British Jews are an attack on Britain itself