The London mayor Sadiq Khan has urged the public to remain “calm and vigilant” as police investigate whether a knife attackthat left one woman dead and five people injured was terror-related.

• Mr Khan said his “heart goes out to the victims” in Russell Square

Police were called just after 10.30pm to reports of a man armed with a knife assaulting people in Russel Square.

Armed units arrived at the scene around five minutes later and Tasered and detained the suspect.

Six people were injured during the incident, including the woman who died at the scene. Two other women and three men were hurt.

The suspect, a 19-year-old man, is currently in police custody at a London hospital.

The  Homicide and Major Crime Command is investigating, supported by officers from the Counter Terrorism Command.

Assistant Commissioner Mark Rowley said: “This was a tragic incident resulting in the death of one woman and five others being injured. 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.

“As a precautionary measure, Londoners will wake up this morning to notice an increased presence on the streets of officers, including armed officers today. We would urge the public to remain calm, alert and vigilant.”

SOURCE:   http://www.independent.co.uk/news/uk/home-news/russell-square-stabbing-london-knife-attack-mayor-latest-news-live-updates-a7171231.html