ISIS Celebrates Newest Terror Attack; Elderly American Woman Killed

UPDATE AT 3:35 EASTERN — According to USA Today, the American woman killed has been identified as Darlene Horton, the wife of Florida State University psychology professor Richard Wagner. The couple was expected to return to the U.S. today after finishing up a summer study abroad program.

Terror struck Europe again last night, this time in a horrific stabbing spree that left one American dead and five other people wounded in London.

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According to the UK Daily Mail, a 19-year-old Norwegian man of Somali origins appeared to attack people at random in Russell Square, silently stabbing people before police Tasered and arrested him.

An American woman in her 60s bled to death on the sidewalk as a young Spanish tourist cradled her in her lap and desperately tried to stem the flow of blood from her wounds. Other victims lay on the ground screaming and covered in blood.

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According to Police UK, Metropolitan Police Assistant Commissioner Mark Rowley said, "Early indications suggest that mental health was a factor in this horrific attack. However, we are keeping an open mind regarding the motive, and terrorism remains one line of inquiry being explored."

After interviewing the suspect's family, though, Rowley is beginning to believe the attack was not "motivated by terrorism."

However, ISIS social media accounts praised the stabbings as another attack on the "centre of Christendom."

Rowley acknowledged that ISIS does have a tendency to recruit fighters who are very young and have mental illness because it's easier to brainwash the vulnerable.

Russell Square and nearby Tavistock Square are where the July 7, 2005 bus terror attack occurred. Islamic terrorists killed 52 people and injured 700 more.