Lincolnshire Police are offering a £100 reward for information leading to the arrest of a violent criminal.
Nathan Booth (20) was recently released from prison in relation to an assault offence in Lincoln in 2009.
Booth is in breach of his licence conditions and has been recalled to prison. He has links to St Giles and is believed to be in the Lincoln area.
Police are urging people not to approach him but to call them immediately.
DI Simon Lovett said: “This is a violent offender who is on the run and we need to trace him as soon as possible. If you know where he is then please call us.”
People can call Lincolnshire Police with information on 0300 111 0300 or call independent charity Crimestoppers anonymously with information on 0800 555 111.