Police were called in at 10:33 p.m. Wednesday, August 3, 2016, after reports were received of a man "seen in possession of a knife injuring people," authorities said in a news release.
Police were called at 22:33 hours on Wednesday, 3 August to reports of a man seen in possession of a knife injuring people at Russell Square, WC1.
Officers attended the scene along with the London Ambulance Service.
Up to six people were found injured at the location.
A female (no further details) was treated at the scene but was pronounced dead a short time later.
We await an update on the condition of the other persons injured and details of any other injuries.
A man was arrested at 22:39 hours and a Taser was discharged by one of the arresting officers.
Additional police units have been deployed to the area to provide reassurance.
Anyone with information should contact police on 101 or call Crimestoppers anonymously on 0800 555 111.
Terrorism is one possibility being explored at this stage.
Police are looking at mental health issues as the main line of inquiry and essentially ruled out terrorism as the likely motive, according to CNN.
A 19-year-old man, who is a Norwegian national of Somali origin, has been arrested following the fatal stabbing in Russell Square shortly before 10.30pm last night.
Police stressed that there was no evidence to suggest that the suspect’s background is “relevant to the motivations of his actions”.
Five people were injured and a woman, believed to be an American in her 60s, was treated at the scene before being pronounced dead a short time later.
Those who were injured were reportedly British, American, Australian and Israeli, according to the Associated Press.
Russell Square was the site of one of London's 2005 terrorist bombings.