Video has emerged of a man, resembling the Paris supermarket gunman Amedy Coulibaly, claiming to be a member of the Islamic State.
Speaking into the camera, the man reportedly says he "came out against the police".
Text playing over the image during the posthumous video confirms he killed a policewoman in southern Paris on Thursday and attacked a kosher supermarket in the city the following day.
Clarissa Jean-Philippe was killed by Coulibaly after responding to reports of a traffic accident as a municipal police officer in the suburb of Montrouge.
The next day, the jihadist gunman walked into a kosher supermarket in the eastern suburb of Vincennes armed with two Kalashnikov rifles.
He killed four people and took more than a dozen others hostage, before being killed by police after a stand-off with officers.
It comes as his family have condemned his killing spree.
His mother and sisters spoke out against his attacks, offering their "sincere condolences" to the families of his victims in a statement.
They said: "We condemn these acts. We absolutely do not share these extreme ideas. We hope there will not be any confusion between these odious acts and the Muslim religion."
Coulibaly (32) was killed by police on Friday after storming the grocer in the Porte de Vincennes area of Paris, where he shot four hostages dead.
His victims were named as Yoav Hattab, Philippe Braham, Yohan Cohen and François-Michel Saada.
Israeli Prime Minister Benjamin Netanyahu, who has encouraged Jews in France to emigrate to Israel following the attacks that left 17 dead, was among the first to pay tribute to the four men.
He said: "We express our deep sorrow for our Jewish brothers who were murdered simply because they were Jews."
"(To) our brothers and sisters in the Jewish community of France we share your pain at the awful loss."
On Thursday, Coulibaly killed a policewoman in Montrouge, south of the city. He shot Clarissa Jean-Phillipe (27) in the head as she attended a traffic accident in the middle class suburb.
He spoke to France's BFMTV during the siege, claiming he was affiliated with Islamic State and telling how he had coordinated his attacks with the Kouachi brothers.
Police are hunting his partner Hayat Boumeddiene (26), who is believed to have travelled to Syria via Turkey in recent days, and may not have been in France when the supermarket siege began.
Coulibaly was the only boy in a family of 10 and by his mid-twenties already had an extensive criminal record and ties to extremist groups.
He met Cherif Kouachi during one of several spells in prison and they saw each other frequently, according to a transcript of a police interview seen by Journal du Dimanche.
He was jailed for five years in 2013 for planning a prison escape for an Algerian Islamist who bombed the Paris underground in 1995, but only served two months.
Authorities are hunting Coulibaly's "armed and dangerous" partner Hayat Boumeddiene who left for Turkey on January 2nd, and may have travelled to Syria.
