The man who killed four shoppers in a hostage stand-off in Paris "undoubtedly" had an accomplice, France's prime minister says.
Manuel Valls said "the hunt will go on" for the person who helped Amedy Coulibaly (32), who shot dead a policewoman in southern Paris before beginning the drama at the kosher supermarket.
He was fatally shot with at least 40 bullets as the siege came to a violent end.
Investigators have been trying to find his partner, Hayat Boumeddiene (26), but Turkey's foreign minister, Mevlut Cavusoglu, said she crossed into Syria from the country on January 8th.
She arrived in an Istanbul airport on January 2nd from Madrid, before the attacks, and stayed in a hotel.
Coulibaly's mother and sisters have condemned his actions, saying "we hope there will not be any confusion between these odious acts and the Muslim religion".
"We did things..so that it'd have more impact"
It had previously emerged that Cherif Kouachi, who launched the attack on satirical magazine Charlie Hebdo along with brother Said, met Coulibaly in prison.
Mr Valls said France would move to isolate Islamist detainees from the rest of the prisoner population, to prevent jails from being breeding ground for radicals.
This measure "must become widespread" but "it must be done discerningly and intelligently", he said. It came after a video emerged showing Coulibaly pledging allegiance to the Islamic State group.
In video verified by the SITE Intelligence Group, he said he had worked in coordination with Said and Cherif Kouachi, the "brothers from our team".
"We did things a bit together and a bit apart, so that it'd have more impact," he said in fluent French, adding that he had helped the brothers financially with "a few thousand euros" for the operation.
The video also showed him doing push-ups and featured automatic rifles, pistols and ammunition. He spoke beneath the black-and-white flag used by many Islamic militants.
Meanwhile, France's interior minister, Bernard Cazeneuve, promised to boost security at Jewish institutions, telling parents of a Jewish school to the south of Paris that soldiers would also be posted as reinforcements.
