Police have opened a criminal investigation into a hate-mail campaign against six academics at Anglia Polytechnic University's business school. Five senior staff and one former member of staff, who have all supported complaints over the appointment and performance of business school dean Hugh Jenkins's son Jonathan, were named in a desk-top published newsletter, which St Neots police confirmed makes a series of "grossly offensive" and untrue statements. The police have been advised by the Crown Prosecution Service that the letter breaches the Malicious Communications Act and is "a recordable offence".