Indefinite hospital order for youth who killed American tourist in knife rampage

Zakaria Bulhan plunged a large kitchen knife into the back of 64-year-old retired special needs teacher Darlene Horton.

A teenager who killed an American tourist and injured five other people when he ran amok with a knife in London's Russell Square has been locked up indefinitely.

Zakaria Bulhan, 19, plunged a large kitchen knife into the back of 64-year-old retired special needs teacher Darlene Horton, and then "skipped" away with a "crazed smile" on his face, leaving carnage in his wake.