Shots have been fired at a petrol station where the two suspects in the Charlie Hebdo magazine attack have been spotted, according to French media.
The BBC reported this morning that several arrests were made overnight during the investigation into the Charlie Hebdo attacks. The French Prime Minister announced the news.
Images were released of brothers Said Kouachi and Cherif Kouachi, both in their 30s, who are suspected of being part of the attack that left 12 people dead.
Officials have said the suspects are linked to a Yemeni terror network.
The youngest of the masked suspects in the shooting has surrendered to police.
Reports suggest Hamyd Mourad, 18, handed himself in to officers after hearing his name on the news.
On Wednesday night heavily armoured French police raided an apartment in the city of Reims, east of Paris, as they continued a massive manhunt to find the killers.
Thousands of officers have reportedly been deployed in the hunt for the men behind the attack on the offices of satirical magazine Charlie Hebdo.
It has previously been targeted over its portrayal of the Prophet Mohammed.
In Wednesday's attack, masked gunmen stormed the offices and called out their victims by name before opening fire during a morning editorial meeting.
They were armed with Kalashnikov rifles and a rocket-propelled grenade.
They were let inside the Charlie Hebdo building by a female employee who was threatened at gunpoint along with her daughter and forced to punch in a security code to allow them inside.
The editor and a cartoonist for the newspaper, who went by the pen names Charb and Cabu, were among those killed.
Radio France chief executive Mathieu Gilet announced that contributor Bernard Maris was also killed.
Two police officers were among the dead, including one assigned as Charb's bodyguard after he had received death threats and another who was shot in the head as he lay wounded on the ground outside the offices.
He has been named as Ahmed Merabet and is believed to be a Muslim.
French President Francois Hollande has declared today a national day of mourning.
In a televised address on Wednesday he said: "We have to respond according to the crime, first of all by finding the authors of this infamy and we have to ensure that they are arrested, judged... and punished very severely."
Tens of thousands of people have staged silent protests in France and across the world in solidarity for the victims of the attack.
Social media users have used the hashtag #jesuischarlie to show solidarity for the victims of the shooting, with the Charlie Hebdo website also using the image as its masthead.
