In the House of Commons on May 1st, 2007. See this statement in context.
AfghanistanOral Questions
Carleton—Mississippi Mills Ontario
Conservative
Gordon O'Connor ConservativeMinister of National Defence
Mr. Speaker, the numbers of prisoners and the details about prisoners are operational matters and are not revealed to the public.
However, if the previous Liberal government wants to admit how many prisoners it transferred, we are quite open to hear it.
See context to find out what was said next.