British authorities say 10 people were stabbed aboard a train headed to London on Saturday evening, with nine suffering life-threatening injuries, in a crime the prime minister called an "appalling in...

However, a series of acts of heroism, in particular from a rail buffet worker now fighting for his life, undoubtedly saved lives, according to witnesses.

While terrorism has been ruled out, sources confirmed that the suspect had a history of mental-health issues and was known to the authorities.