Police are appealing for information in order to trace 40-year-old Richard Johnson, who is wanted in connection to an assault in the Birchwood area.
Officers say the assault took place on May 25
Mr Johnson was last known to be living in Lincoln. Police say numerous enquiries have been made to locate him but none have been successful.
Police would like to hear from anyone who has any information in relation to his whereabouts.
Anyone that sees Mr Johnson is being told not approach him and call Lincolnshire Police on 101, quoting incident 407 of May 25.
People can also call independent charity Crimestoppers anonymously on 0800 555 111.