In new information that could potentially shed some light on the case, authorities have learned that the store had been receiving harassing phone calls from an unknown man shortly before the disappearance. Most of the calls were directed at Sjodin.
Speaking on Good Morning America today, Sjodin's father, Allan Sjodin, said his daughter had not told the family about the phone calls at work.
"She hadn't mentioned the phone calls," said Allan. "She mentioned that another person, a different person, was putting some pressure on her."
According to Allan, the unidentified person had wanted "more out of the relationship than she was willing to give."
Who Was the Caller?
Speaking on Good Morning America today, Sgt. Michael Hedlund said the police department was assuming that the friend who had wanted "more out of" his relationship with Sjodin was not the person calling her workplace. He did, however, warn that it was not possible to make a definitive assumption as yet.
"We don't know a whole lot of details on the calls yet," said Hedlund. "Our understanding [is that] there was a subject with a foreign accent — we don't know what nationality — and a majority of the calls requested Dru by name. Whether she actually even spoke to the subject, we're not sure."
Police have sent some items from Sjodin's car to a crime lab for analysis and have expanded the search to include civilian volunteers.
The police have also been using helicopters, all-terrain vehicles, horses and dogs to search fields near Grand Forks as well as the area around Fisher. Landowners have been asked to check their properties. 