The American tourist killed in the stabbing attack in London's Russell Square has been identified.

Darlene Horton, whose husband is a Florida State University professor, Richard Wagner, died at the scene after being knifed in the back. The couple had began packing up their belongings after spending the Summer in the capital. They were due to return home to the States on Wednesday.

In a statement after the attack State University President John Thrasher said: "There are no words to express our heartache over this terrible tragedy. We are shocked that such senseless violence has touched our own FSU family, and we will do all we can to assist Professor Wagner and his loved ones, as well as his friends and colleagues in the Psychology department, as they mourn."

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