Police are appealing for a 30-year-old man last seen in Northamptonshire on Monday, to get in touch.
Emil Zamal was last seen in the Cliftonville Road area of Northampton at 9am on Monday, May 9.
He has links with Merseyside and may have travelled to that area.
Emil is described as an Asian man with short, dark hair, brown eyes, 5ft 6in with a medium build.
A force spokeswoman said his behaviour can be unpredictable and has advised members of the public who think they recognise him not to approach him but to contact police.
Police are urging Emil, or anyone who knows of his whereabouts, to contact Northamptonshire Police on 101.