In another suspected ISIS attack, a police commander was stabbed at least nine times outside his home in Magnanville, a suburb of Paris. The attacker then entered his home and took his partner, also a police officer, and their three-year-old son hostage.
RAID, an elite police unit called to the scene was unable to reach an agreement with the terrorist and stormed the house around midnight. They found the woman's body, killed him, and rescued the child unharmed.
The terrorist, identified as Larossi Abballa, 25, posted a 13-minute video of the murders and 15 photos on Facebook, which removed the post the following morning.
During negotiations with police, Abballa reportedly identified himself with ISIS, though the group has yet to claim responsibility for the attack. Eyewitnesses say they heard him shouting Allahu Akbar (Allah is greater) and other Islamic slogans.
French President Francoise Holland said his country is facing a "very large scale" terror threat.
"France is not the only country concerned, as we have seen again in the United States, in Orlando," Hollande told reporters.
French police said Abballa was convicted of recruiting for Islamic groups in Pakistan and sentenced to three years in prison in 2013.