A backpack search is planned this morning at Craig High School after a bomb threat was made. Janesville police say school district officials reported the threat at 8:30 Tuesday night. Then police assisted the school district in a sweep of the school grounds “but didn’t’ find anything,” . Parents of students were notified of the 7:30 a-m backpack search through the school district’s electronic alert system. Students will be allowed to enter the school this morning through only the main, sophomore and senior entrances, where police and school officials will be present.