International orders / shipments may be subject to the possible opening of packages and inspection of goods by customs officials in the country of delivery. (us.foursigmatic.com)
Once we've shipped your package, we can't do anything with it once it's in the hands of customs officials and your country's postal service. (etsy.com)
So say customs officials search a package and find some CD - ROMs. (law.stackexchange.com)