Undercover CIA agent disguised as terrorist arrested by undercover FBI agent also disguised as terrorist

Washington DC: In a mind twisting turn of events in America's war against terrorism, something rather odd happened that shocked the people around US

CIA and FBI both started an undercover operation against suspects involved in terrorism, not informing.
What seemed to be a major success for a FBI agent disguised as terrorist turned out to be a shame because he ended up arresting a suspect who turned out to be an undercover CIA agent investigating  against the same organization.