Your screen right now. The master bombmaker for al qaeda in the Arabian Peninsula. Hes the man Officials Say designed the underwear bomb that failed to deadinate a detroit bound flight on Christmas Day in 2009. Also made the printer cartridge bo bombs the next year. The new warning is related to recent intelligence gathered believe to be tied, our understanding these bombmakers end up with a fingerprint. Things they do in designing these bombs that trace to a specific individual. Our chief National Correspondent jim sciutto is in washington tonight. Jim, what more do you know about this warning and about this situation . Is the official said the threat is related to al qaeda. Whether to al qaeda core and pakistan led by bin laden and al qaeda in the Arabian Peninsula and growing in strength in recent years tied to the master bombmaker for al qaeda al asiri and someone they have been watching for quite some time. The intelligence or the warning was based on intelligence that this bombma