LIVE: Police chase Charlie Hebdo gunmen

It's suspected that hostages were taken at a business in the town of Dammartin-en-Goele.

Suspects in the attack in Paris named as Cherif Kouachi and Said Kouachi.

A manhunt is underway for two men believed to be responsible for Wednesday's terror attack in which 12 people were killed in Paris.

This live feed is courtesy of France 24.

Follow the developments here:

12:20pm CNN reporting that sources say the hostage is a woman.

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12:16pm Charles de Gaulle Airport confirms two runways have been closed.

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12:14pm Police confirm exchange of gunfire with suspects on N2 highway. Parts of the freeway have been sealed off.

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12:07pm - An estimated 80,000 police officers are searching for the Kouachi brothers.

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12:05pm - There are reports that police may be negotiating with the men holding people hostage in Dammartin-en-Goele.

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12:01pm - This is one of the latest pictures coming out of Dammartin-en-Goele. Picture AFP

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12pm - France's prime minister says the country is at war with "terrorism", not religion.

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11:40am - It's understood two of Charles de Gaulle's four runways have been closed.

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11:39am - The French interior ministers has confirmed police have surrounded the two men, who are believed to be near the Charles de Gaulle Airport.

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11:30am - This is some of the latest information being sent out at the moment.

What we know so far about the major operation northeast of Paris #CharlieHebdo http://t.co/GWpwcdfIJA pic.twitter.com/UpeKOm4WCN

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11:22am - There are reports Dammartin-en-Goele is in lockdown as police continue their search.

Developing: French town in lockdown as police search for #CharlieHebdo suspects

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11:15am - Reuters is reporting one person was killed and several injured before the hostage drama started, but French prosuectors say the person has not died. We'll bring you confirmed details as it comes in.

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According to the Bloomberg news website, shots were fired in the town of Dammartin-en-Goele outside of Paris as police hunted the suspects in the massacre of journalists at French magazine Charlie Hebdo.

It's suspected that hostages were taken at a business in the town of Dammartin-en-Goele which is about 13.5 kilometres northeast of Charles de Gaulle Airport in France's Seine-et-Marne department.

The site reports that a car was stolen this morning in Montagny-Sainte-Felicite, in a town nearby.

According to Bloomeberg an elite counter-terrorist police surrounded three hamlets 70 kilometres northeast of Paris in an effort to find Said Kouachi, 34, and his 32-year-old brother Cherif. The villages border a dense forest larger than the city of Paris.

France is in the centre of one of its history's greatest manhunts after 12 people were killed on 7 Jan at Charlie Hebdo's Paris offices by masked men brandishing Kalashnikov assault rifles.