A Newmarket man has been banned from the University of New Hampshire after police say he tried to recruit female students to serve as concubines.

Campus police say Bert Allen, a registered sex offender, posted a two-page flyer at the school library seeking young women to sign lifetime contracts to become wives or concubines in exchange for gifts, vacations, help with school and other benefits. Authorities sent him a letter this week informing him that he will be charged with trespassing if he shows up on campus.

Allen denies posting the flyer and says he was at the library to use a computer for legal work.