Officers want to speak to a man believed to be central to their investigation into the incident, which took place in River Way at about 7.30pm on Monday, February 3.
Members of the public who recognise the man or have any relevant information are being urged to come forward.
A spokesman for Essex Police said: “We believe this man could provide crucial information regarding our ongoing investigation into the burglary in River Way.
“If you know who he is, or if you have any details that could assist us, please reach out as soon as possible.”
Anyone with information can report it online through the Essex Police website or use the Live Chat service, which is available 24/7.
To submit a report, visit essex.police.uk/digital101.
Information can be given anonymously through Crimestoppers on their website or by calling 0800 555111.
Quote crime reference number 42/15895/25.