Preston Police have launched an investigation to find the whereabouts of Jordan Bailey.
Police want to speak to Jordan following a disturbance on Grafton Street near Broadgate, Preston at about 3.30pm on June 5, during which a man was stabbed.
He is described as white, 5ft 5ins, slim, with blue eyes and short light brown hair.
Read more: Covid trauma clinic at UCLan urges GPs to up referrals
Bailey, 20, has links across Preston as well as South Ribble.
Police are asking people not to approach Bailey but if anyone has information about where he may be they should call police on 101 or 01772 209940.
For immediate sightings please call 999.
Read more: See the latest Preston news and headlines