Police responded to calls of someone with a gun in at least three schools in Minnesota on Wednesday morning, but no threat was found and no one was hurt. It is part of what officials say may be part of a series of hoax calls across the country.
Police said in an 11:30 a.m. news conference in Rochester that they are working to track down who made a hoax call there. They already know it came from a real person — not a recording — using an internet phone number with an area code not from Minnesota.
