Washington (CNN) The U.S. is now looking at the possibility that wives of ISIS figures may play a greater role in operations and communications than previously thought because the terror group believes U.S. intelligence pays less attention to them.

Last month, an Army Delta Force raid in eastern Syria killed Abu Sayyaf, a senior ISIS leader involved in finance and other operations, and also led to the capture of his wife. The raid yielded significant intelligence that U.S. officials said adds to their understanding of ISIS's structure and communications.

Several officials cautioned, however, that all of the intelligence gathered and information gained from the interrogation of the captured wife must be vetted and confirmed.

As CNN has previously reported, a U.S. official said the raid netted terabytes worth of data in external hard drives and hard copy, a higher volume than had originally been anticipated. The U.S. is reviewing it all to determine if it leads to anything that can be acted upon.

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