>> Details emerging about the American woman stabbed to death in the streets of London this week. Florida Governor Rick Scott on Thursday, identifying the victim as Darlene Horton, the 64 year old wife of a Florida State psychology professor teaching at the University Summer Study Abroad Program. Five other people were also injured in Wednesday nights attack in Russell Square, a 19-year-old Norwegian man of Somali decent taken into custody at the scene.
Britain's Counter Terrorism Unit had been called in to investigate. But police say no evidence of radicalization has been found to link the incident to terrorism. Reuters UK correspondent Costas Pitas is in London. The police said quite early on in their investigations overnight into the early hours of the morning that mental health issues were a particular concern regarding this incident.
And in the last few hours, they've steered increasingly away from terrorism as a motivation. Britain's threat level is on severe, which means an attack is highly likely. There's no indication that that level will change as a result of today's incidents, at least, for the moment. What does this mean for London as well?
More armed police officers are going to be on the streets as a result of the decision that was made yesterday. Obviously Europe, Western Europe, in particular, is on a high alert. There have been terrorist incidents in Brussels, in France, in Germany but also in Turkey.>> Just hours before the attack, London's police chief announced the deployment of an additional 600 armed officers across the capital.
Horton was reportedly killed the same day the summer program ended. She and her husband were expected to return to Florida on Thursday.