Sussex Police has released a CCTV image of a man officers wish to speak to in connection with a burglary at a language school.
Officers said a Mac Mini computer worth £479 was stolen from the Intensive School of English in Duke Street on March 27, between 3.12pm and 3.17pm.
The suspect, who was not known to staff or students, reportedly went into the school through the main entrance, following returning students from their break.
Police said he then snuck into a corridor while pretending to use his mobile phone.
The suspect then went into an empty classroom, removed the Mac Mini and made off through the main door, police said.
Anyone who recognises the suspect or has any information is asked to contact police by emailing email@example.com or report online quoting serial of 751 of 30/03.