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Aurelien Meunier via Getty Images Bernard Cazeneuve (R), French Minister of Interior welcomes Eric Holder (L) the United States of America Minister of Interior during the meeting with ministers of interior and homeland security held in the ministry of interior Place Beauvau on January 11, 2015 in Paris, France. The meeting is organised prior a lunch at Palais de l' Elysee and they will all join the mass unity rally held in Paris following the recent terrorist attacks

Attorney General Eric Holder avoided naming a specific terrorist organization as responsible for last week's attacks in Paris during a flurry of appearances on Sunday political shows.

"Well, at this point, we don't have any credible information that would allow us to make a determination as to which organization was responsible," Holder told ABC's "This Week" host George Stephanopoulos.

Stephanopoulos asked Holder whether the Islamic State or Yemen's al Qaeda affiliate were connected to the militant brothers Cherif and Said Kouachi, who are suspected of killing 12 people Wednesday in a targeted attack on the satirical newspaper Charlie Hebdo in retaliation for its controversial cartoons of the Prophet Muhammad. The brothers were killed by police later in the week.

"I think it's clear that both organizations pose a threat to the United States, as well as to its allies," Holder said.

Also in France last week, Amedy Coulibaly, the gunman who killed a traffic policewoman on Thursday and then shot four hostages at a Jewish supermarket on Friday, said in an interview with a French news channel before he was killed by police that he had acted on behalf of the Islamic State. French authorities believe his girlfriend, Hayat Boumeddiene, left France, perhaps bound for Syria, on Jan. 2.

French counterterrorist officials are investigating links between Coulibaly and the Kouachi brothers, how they obtained funding and weapons, and whether they were members of an extremist sleeper cell.

Holder said the United States would have to determine if any terrorist organization was directly responsible for the attacks before initiating any kind of retaliation.

"Bringing people to justice who are responsible for these acts is certainly something that we would work together with our French counterparts, and to the extent that there is something more than that, we will certainly consider whatever it is that they would propose," he said.

Holder attended a security summit hosted by the French Interior Ministry on Sunday, along with intelligence and law enforcement officials from across Europe and North America.

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Holder: No 'Credible Information' To Determine Responsibility For Paris Attacks