French authorities are calling it an "abject terrorist attack"—the first confirmed one since last November's bloodshed. On Monday night, a 42-year-old deputy police chief was stabbed to death outside his home in Magnanville, outside Paris, by an attacker who then entered the home and took the man's partner and 3-year-old son hostage, the Guardian reports. Officials say that during negotiations, the attacker claimed allegiance to ISIS. He was killed by a SWAT team after a standoff with police, CNN reports. Inside the home, officers found the body of the officer's partner, who also worked for the police, and rescued the little boy. Authorities say the child was "in shock but unharmed" and has received medical attention.
The boy "is safe and sound," an interior ministry spokesman told reporters after officers entered the home around midnight. The attacker has been identified in French media as Larossi Abballa, a 25-year-old man who was already known to authorities and served time in prison for "criminal association with the aim of preparing terrorist acts," the BBC reports. According to a French terror expert, Abballa broadcast the attack on Facebook Live. He allegedly filmed himself with the boy behind him on a sofa and said, chillingly: "I don't know yet what I'm going to do with him." ISIS used a propaganda outlet to claim responsibility for the attack, the Telegraph reports.