Israel’s ambassador to Britain, Mark Regev, named the victim as Hannah Bladon on his Twitter account, adding that she was “murdered in a senseless act of terror.”
The incident occurred in a train carriage on the light rail network near the walled Old City. TV footage showed blood on the floor of the carriage with police officers restraining a man and carrying him away.
A paramedic for the Magen David Adom ambulance service said the woman had suffered multiple stab wounds and was pronounced dead in hospital.
The British Foreign Office in London said in a statement: “We can confirm the tragic death of a British national in Jerusalem. We are providing support for her family at this difficult time and are in touch with the local authorities.”