A terrorism analyst for CNN said that the recent spate of terrorist attacks could be due to "two or three lone wolves who somehow got together." David Rohde, who is also an editor at Reuters, joined CNN host Carol Costello Monday morning.

Costello noted it was odd that ISIS claimed responsibility for the stabbing in Minnesota, but not the attacks in new Jersey and New York. Rohde agreed that "it's odd."

"You would think that ISIS would sort of leap at the chance to get credit for this," said Rohde. "So there's a chance that ISIS is not directing the cell in New York. Again there has been this, you know, we've seen this stream of attacks and it can be, you know, two or three lone wolves who somehow got together and radicalized online. To be fair, and the important thing is not to alarm people, we don't know."

Senior writer Steve Hayes was left wondering exactly how terrorists working together could be considered "lone wolves."