Under the alias Mohamed Ali, the 25-year-old French citizen, Larossi Abballa, sent live on Facebook from his victims home in Paris during the terrorist attack where he killed two people.
The terrorist stabbed officer Jean-Baptiste Salvaing, 42, nine times outside his property after returning home at around 9pm. He reportedly shouted "Allahu Akbar" during the attack.
He then entered Mr Salvaing's property and took his wife and three-year-old son hostage, before he also killed the wife.
According to the French journalist David Thomson, in addition to broadcasting live, he also posted several pictures of the dead couple, the police commander and the commander's wife, on his Facebook profile.
At one point in the video one can see the couple's young 3-year-old son sitting on the couch behind him.
- I don't know what to do with him yet, says the perpetrator, according to one of David Thomson's many tweets.
In the video the perpetrator says, according to David Thomson, that "EURO (the ongoing football championship) will become a graveyard," and he calls for more killings of policemen, journalists, prison officers and rappers. He cites names of people who he thinks should die.
The killer is believed to have had pledged his allegiance to the Islamic State (ISIS) during the frenzied attack.
He was later gunned down by police at the scene of the atrocious crime.
France is in high terror alert as this year's European Championship finals in football takes place throughout the country, and many have feared that terrorist attacks will take place.
French police on Tuesday night wrote on its official Twitter account and asked people not to share information and pictures from the night's terrorist drama.
The footage included a 13-minute video of the murders, and 15 photos, which are now removed from Facebook.
- Do not contribute to the spread of malicious images. Do NOT share them, but let us know about them, the police tweeted.
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