Police are investigating an aggravated burglary which happened at a house in Main Road, Great Leighs, just before 7pm on Friday, October 21.
Four men wearing balaclavas called at the property, restrained the owners and made off with cash and jewellery.
During the incident a man aged in his 50s received a serious injury to his hand. Both he and a woman, also in her 50s, were taken to hospital for treatment.
Dc Dan Smith from Chelmsford CID said: “This is an extremely serious incident and thankfully, the occupants are now recovering from their ordeal. This happened at a busy time of day when lots of people would have still been on the road returning from work. I would be particularly interested if anyone who has cameras installed in their vehicles was driving through the area at this time to contact me at Chelmsford CID and allow us access to the footage.”
Anyone with information is asked to contact Dc Smith at Chelmsford CID on 101 or Crimestoppers on 0800 555 111.