(b) In the
case of a
request for
surrender, the
fact that despite best efforts, the
person sought cannot be located or that the
investigation conducted has
determined that the
person in the requested
State is clearly not the
person named in the
warrant; or
(c) The
fact that
execution of the
request in its current form would require the requested
State to
breach a pre-
existing treaty obligation undertaken with
respect to another
State.