Hundreds of people queued from the early hours outside UK shops selling the latest edition of French satirical magazine Charlie Hebdo.
It comes as around 10 people have been arrested and questioned over the "possible logistical support" they may have provided three gunmen who carried out last week's attacks in Paris, Agence France-Presse reports.
The gunmen behind the deadly attack on French satirical magazine Charlie Hebdo have reportedly been buried in unmarked graves amid tight security.
Cherif Kouachi was buried overnight in his hometown of Gennevilliers near Paris, an official from the local mayor's office told AFP while his brother and accomplice Said Kouachi was buried late on Friday in Reims.
Both brothers have been buried in unmarked graves to prevent them from becoming shrines for Islamists.
The pair attacked Charlie Hebdo on January 7, killing 12 people. They were killed by police two days later during a standoff at an industrial estate north of Paris.
About 7,000 French Jewish people left the country last year and have moved to Israel because they did not feel safe.
The aunt of a man killed while trying to overpower gunman Amedy Coulibaly has told ITV News her family is fearful of their future in France.
A Muslim cleric in Pakistan has held a ceremony to honour Cherif and Said Kouachi, the two men suspected of the Charlie Hebdo massacre.