Metropolitan Police Commissioner Cressida Dick, 2nd right, and Major General Ben Bathhurst, General Officer Commanding London District, right, meet soldiers and police officers on deployment in the Palace of Westminster, London, after Scotland Yard announced armed troops will be deployed to guard "key locations" such as Buckingham Palace, Downing Street, the Palace of Westminster and embassies Wednesday May 24, 2017.
Scotland Yard said the 21-year-old woman was arrested on suspicion of preparing or instigating terrorism acts after she was discharged from the hospital Sunday.
UK: Police arrest woman who was shot during police raid →
