An attacker's invocation of Islamic State has prompted the anti-terrorism section of the Paris prosecutor's office to take over a case in which a French police commander and his companion were killed Monday morning, a judicial source told dpa.
French President Francois Hollande conducted an emergency meeting at the Elysee Palace following the attack, which took place overnight in Magnanville, approximately 50 kilometres west of Paris. Speaking after the meeting, Hollande said the killing was a terrorist act.
The police commander was killed at knifepoint. His female companion, who worked for the Interior Ministry, was also found dead inside their home. Ministry spokesman Pierre-Henry Brandet said the attacker was also killed by police special forces.
The couple's 3-year-old son was found unharmed inside the home, the Elysee said.
France has seen a string of terrorist attacks and attempted terrorist attacks since the beginning of 2015, when journalists at a satirical magazine were shot by two brothers claiming allegiance to the Islamic State group. In November, 130 people died in coordinated attacks around Paris.