A massive police operation is under way in northeast of Paris, as the search for two suspects responsible for the heinous killing of 12 people at French magazine earlier in the week, intensified, local media and the interior ministry have confirmed.
Local media said witnesses reported on Friday a high-speed car chase and gunshots as police chased the suspects on a French highway outside Paris.
The latest developments come as heavily armed anti-terrorism police swooped on residential areas northeast of Paris in a extensive manhunt for two brothers suspected of being behind killing at satirical weekly, Charlie Hebdo.
Al Jazeera's Laurence Lee, reporting from Dammartin-en-Goele, around 30km north-east of Paris, on Friday, said the entire area was under lockdown amid multiple reports filtering through of the men's whereabouts in the area. It is also undersood that the men may have taken a hostage.
"Police have sealed the area as part of their attempt to isolate and sterilze area. People have been told to stay in their offices and not move around," our correspondent said.
Officers said the operation began after witnesses sighted the two men said to be responsible for the attack on Charlie Hebdo in a town in the Picardy region, adding that their hijacked getaway car was found in the same area.
Al Jazeera's Jacky Rowland, reporting from Paris, said the manhunt was approaching its final moments.
The manager of a petrol station near the Villers-Cotteret commune in Picardy said he "recognised the two men suspected of having participated in the attack against Charlie Hebdo," police sources said.
Villers-Cotteret is located approximately 80km northeast of Paris.
The latest getaway car of the attackers, who hijacked multiple vehicles after the incident, was found abandoned around the same area.
The identity cards of the suspects and petrol bombs were found in the abandoned car.
Two of the alleged attackers, who are also brothers, have been identified as 32-year-old Said Kouachi and 34-year-old Cherif Kouachi. Police said they are French-born sons of Algerian-born parents.
The two men, along with another person who is believed to be a teenager, are thought to have carried out Wednesday's attack before escaping in a car.
In a news conference late on Thursday, Interior Minister Bernard Cazeneuve said the younger brother was known French security forces, adding that he had had links to al-Qaeda in 2004 and 2005.
He added that Said Kouachi had been under security survellience.
Suspect jailed before
Earlier, police said that Kouachi was imprisoned for 18 months for trying to travel to Iraq to fight for armed groups.
Nine people have been detained in relation to the investigation, Cazeneuve also said.
Al Jazeera's Barnaby Phillips, reporting from Picardy, said there had been intense activity by counterterrorism police in the region where the suspects had been spotted.
"French police seem to be aiming to capture the suspects if and when they surface to get resources, such as food and petrol," he said
Tensions in Paris were high on Thursday as France began a day of national mourning, after the controversial Charlie Hebdo magazine was attacked by three armed men on Wednesday. Eleven people were also injured in the attack.
Four cartoonists working with the publication, including the editor Stephane Charbonnier, known as "Charb", were among the dead.
The other cartoonists killed were known as Cabu, Tignous and Wolinski.
Meanwhile, in another incident, a police officer was killed on the outskirts of Paris on thursday. Prosecutors said the latest shooting was also being treated as a "terrorist act".
It was not immediately clear if that shooting was linked to the previous day's attack at the Paris-based satirical magazine, where two policemen were among the dead.
Officers have identified and released the photographs of the two brothers suspected to be involved in the Charlie Hebdo attack.
Witnesses said the attackers spoke fluent, unaccented French, and shouted "Allahu Akbar!" as they opened fire in the noon-time attack on the Charlie Hebdo headquarters, located near Paris' iconic Bastille monument.
Charlie Hebdo's depictions of Islam, including the Prophet Muhammad, had drawn condemnation and threats before. It was firebombed in 2011 - although it also satirised other religions as well as political figures.
Eiffel Tower goes dark
Tens of thousands of people have taken part in vigils across France on Wednesday and Thursday in commemoration of the victims. The Eiffel Tower went dark on Thursday night as large rallies were held in central Paris.
Wednesday's attack triggered global outrage and condemnation.
French President Francois Hollande said it was a "terrorist act of exceptional barbarism", adding that other attacks have been thwarted in France in recent weeks.
Fears have been running high in France and other countries in Europe that fighters returning from conflicts in Syria and Iraq will stage attacks at home.
The security alert in the country has been raised to the highest level and protective measures at houses of worship, stores and media offices immediately reinforced. Schools across the French capital have also been closed.
There was no immediate claim of responsibility for the Charlie Hebdo attack.
On Wednesday, France's Muslim leadership sharply condemned the shooting as a "barbaric" attack and an assault on press freedom and democracy.
The body represents France's Muslim community, which is Europe's biggest and estimated to number between 3.5 million and 5 million people.
Tariq Ramadan, professor of Contemporary Islamic Studies at Oxford University, discusses the impact of the Charlie Hebdo attack in Paris.
Source: Al Jazeera and agencies
© 2010 Aljazeera Network
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