Lincolnshire Police are looking for the man pictured after he ran away from being questioned by officers.
The force says he allegedly ran away from officers in the Dixon Street area at around 12.45am on Monday.
The officers were questioning him about a criminal damage investigation.
At the time, the man was shirtless. He has dark hair but no further description was provided.
Anybody who knows the man or is aware of his whereabouts can call police on 101 quoting reference 2000262868.