Armed security forces fly overhead in a military helicopter today in Dammartin-en-Goele, northeast of Paris. French security forces swarmed this small industrial town northeast of Paris in an operation to capture a pair of heavily armed suspects in the deadly storming of a satirical newspaper.

DAMMARTIN-EN-GOELE, France — French security forces struggled with two rapidly developing hostage-taking situations today, one northeast of Paris where two terror suspects were holed up with a hostage in a printing plant and the other an attack on a kosher market in Paris involving at least five hostages.

France has been high alert for more attacks since the country’s worst terror attack in decades — the massacre Wednesday in Paris that left 12 people dead at the satirical newspaper Charlie Hebdo.

The two brothers suspected in the newspaper slayings were cornered by police today inside a printing house in the small industrial town of Dammartin-en-Goele. One lawmaker said they told negotiators they “want to die as martyrs.”

Hours later, a gunman seized an unknown number of hostages at a kosher market in eastern Paris, France’s anti-terrorism prosecutor said. A police official, who was not authorized to speak to the media about the events, told The Associated Press the man who has taken five people hostage in a kosher market appears linked to the Charlie Hebdo massacre.

Police SWAT squads descended on the area near Paris’ Porte de Vincennes neighborhood and France’s top security official rushed to the scene. The attack came before sundown when the market would have been crowded with shoppers.

The police official said the gunman opened fire in the market today declaring “You know who I am.” Paris police had released a photo of Amedy Coulibaly as a suspect in the killing Thursday of a Paris policewoman, and the official named him as the man holed up in the market. The official said some hostages have been gravely wounded.

He said a second suspect, a woman named Hayet Boumddiene, is the gunman’s accomplice.

Some 25 miles to the north, French security forces had poured into Dammartin-en-Goele near Charles de Gaulle airport after the two terror suspects hijacked a car early Friday in a nearby town.

One of the men had been convicted of terrorism charges in 2008, the other had visited Yemen. A U.S. official said both brothers — 32-year-old Cherif Kouachi and 34-year-old Said Kouachi — were on the American no-fly list.