Princeton MN Bomb Threat Shakes Town, Closes Schools

Photo: Screen Capture from Princeton School District's Web site.

PRINCETON, Minn. (CBS/AP) A series of suspicious packages left at three sites in the small town of Princeton, Minn., have shaken the locality 50 miles north of Minneapolis.

The Princeton School District closed all schools as a precaution, according to its Web site. All 3,500 students were sent home Wednesday morning. One of the suspicious packages was found at the high school.

The first of the packages was found about 6:30 a.m. behind a post office. Another was found at the city's public utilities office.

City officials held a late-morning news conference where they said all three scenes had been cleared, but they gave few details about the packages or what might have been in them.