She was, in fact, communicating with an undercover agent with the Federal Bureau of Investigation. The court documents said Liu ordered 10 millilitres of the toxin and had it shipped under a fake name to a business that receives mail in Pembina, N.D. She also ordered personal protective equipment including a mask, apron and gloves.
The documents gave no indication what the toxin was or whether there was a motive behind the purchase. About a month later, Liu crossed the Canada-U.S. border from Manitoba and told officials that she planned to go shopping in Grand Forks, N.D. for the day.
Instead, she drove a few kilometres to the business where the packages were shipped to. The documents said she identified herself as Julie Chen and signed off on six packages. She also claimed to be picking up one other package for a friend named Sijie Liu. When Liu left the business with a small flatbed cart loaded with the packages, she was arrested. An affidavit from an FBI agent filed in court said that before Liu was questioned by officers, she said: “I know what I did was wrong.”
Later, when Liu contacted a man identified as her husband, she was overheard saying she had broken the law, the affidavit said. Liu is to remain incarcerated in the U.S. until she can be transferred to Canada to serve the rest of her sentence.