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(CNN) – ISIS fighters captured on the battlefield in Iraq told Iraq interrogators of terror plots to attack subway systems in the U.S., says a CNN terrorism analyst.
But these fighters "are notorious for providing unreliable information. It's not clear whether they cross-checked this information. Perhaps they were making it up. Perhaps they were saying this under duress," says analyst Paul Cruickshank.
If Iraqis had captured high-ranking ISIS officials who divulged details on a terror plot, that would be different, said Robert McFadden, senior vice president of The Soufan Group.
"From my experience, (it is) highly unlikely from battlefield interviews and interrogation that say foot soldiers, if that turns out to be case, would have that kind of information," said McFadden.
U.S. intelligence and law enforcement agencies have no indications of an ISIS terrorist plot against U.S. subway systems, two U.S. law enforcement officials told CNN on Thursday.
Iraqi Prime Minister Haider al-Abadi told reporters at the United Nations on Thursday that his country's intelligence agency had uncovered an imminent ISIS plot against New York and Paris subway systems.
For more analysis from CNN terrorism analyst Paul Cruickshank and The Soufan Group's Robert McFadden, check out the video above.