The events took place Saturday afternoon in the rue Roger Salengro in Hellemmes, near Lille, in the North.
At around 16: 20, a violent argument broke out in a couple in which the man is 44-year-old grabbed a knife and stabbed his girlfriend to 7 times.
Then the forty-something woman fled before being arrested moments later at the subway station Caullier. He was placed in police custody.
As for the victim, aged 33 years, it was transported to the hospital where she lies between life and death.