An 11-year-old girl and a 34-year-old woman were stabbed in Leicester Square in central London on Monday, police said.
A man has been arrested, and investigators "don't believe there are any outstanding suspects," according to London's Metropolitan Police Service
There is currently no evidence to suggest the incident is terror-related, police said.
The girl and the woman were taken to a hospital, police said, adding in an update that the 11-year-old will require further treatment, although her injures are not considered life-threatening. The woman sustained lesser injures, according to police.
The incident occurred as the U.K. remains on edge after a week of violence as far-right rioters clashed with police. The riots took place across England and Wales and were fueled by far-right activists using social media to spread misinformation.
Those riots follow the deaths of three girls, who were stabbed in a "ferocious" attack during a July 19 dance event in Southport, a seaside town, according to police.
MORE: UK police clash with rioters in the wake of deadly knife attack at dance eventA 17-year-old was arrested and charged with murder in the earlier Southport knife attack, police said. The suspect was from Banks, a coastal village in Lancashire, and was born in Cardiff, Wales, police said.
The Crown Court released the suspect's name after a judge ruled it could be released despite his age. Although the suspect was born in the United Kingdom, online rumors spread calling into question his immigration status, police said.