Norwegian national of Somali origin pleads guilty to frenzied knife attack that left 1 dead & 5 injured

Zakaria Bulhan, 19, stabbed retired teacher Darlene Horton, 64, to death just hours before she was due to fly home to Tallahassee, in Florida, after visiting London with her university professor husband Richard Wagner.

Bulhan, a Norwegian national of Somali origin who was living in Wandsworth, south-west London, denied murdering the mother-of-two on 3 August last year, but pleaded guilty to manslaughter by diminished responsibility.