Officials said the suspect, identified as 'Abdoullah C.', regularly phoned cousin of Paris attacks ringleader in the days following the massacres.
The 58-year-old from Réunion was detained by police on arrival in Paris over planting of fake bomb that forced jet into emergency landing in Kenya.
French interior minister says a 25-year-old, under surveillance, was arrested last month over plan to attack major French Mediterranean naval base.
The former premier league footballer is reportedly one of four men questioned over alleged blackmail of Lyon star Mathieu Valbuena.
French authorities said the 29-year-old, who had trained in an Islamic State combat camp in Syria, denied intending to carry out the attack.
A 28-year-old man has been arrested after the body of David King, 70, who went missing last October, was found in a well in his garden.
As seven of last week's Paris shootings victims were buried, France issued arrest warrant for a man held in Bulgaria linked to one of the gunmen.
The man, carrying two shotguns and a knife, was detained just days after separate incidents of random street attacks in Nantes and Dijon.
Human rights court says nine arrested pirates should get thousands of euros because they were not immediately brought before a French judge.
The arrest and conviction of protesters following pro-Palestinian and pro-Gaza demonstrations in Paris have led to accusations of judicial double standards. Critics claim that young non-white Muslims have been singled out for punishment by the police and courts. Here Mediapart highlights the case of a young man called Mohamed who was convicted after intervening when his younger brother was stopped by police officers following a pro-Gaza protest on July 13th. Though his sentence was reduced on appeal, Mohamed still insists he did nothing wrong and says he was only arrested because he is a Muslim who supports the Palestinian cause. Thomas Saint-Cricq reports.
The 41 year-old was given a 2,500-euro fine and banned from re-entering Georgia for five years for carrying painkiller authorised in France.
Prosecutor says equipment found on the man arrested for the fatal shootings at Brussels' Jewish Museum showed he tried to film his attack.
The two men of Tunisian origin, who are believed to be members of an al Qaeda cell in Yemen, were arrested while trying to leave the country.
Seven instructors have been arrested in the French Alps for providing lessons without a licence as part of a bitter jobs war on the ski slopes.
The 48-year-old is said to be a quiet 'mountain man' and a gun enthusiast but authorities stress he has no direct link with any of the victims.