Christian Ramsey was a criminal.
Christian Ramsey was a well known criminal with several crimes on his name, including smuggling, trespassing and digital currency duplication.
At one time Christian was asked by an unknown male client to get him a null state stasis container. As he points out, many are UNSC property and are numbered. He eventually agrees to getting a small, 10 cubic meters, box for the client.
Eventually, Christian obtains the container and has sent it on its way to Sedra. He comments that his client has nothing to worry about, since the UNSC is not stationed there and the Sedran Security is a joke. He comments he has put a hard-copy map with the container. The map later found in posession of the smuggler Axl, who brought the biological weapon to Sedra.