ESSEX Police are appealing for witnesses following a robbery in Broadway, Grays, where four men forced entry to an address.
The men were reported to have been in possession of knives, and sprayed the victim in the face with an unknown substance.
A wallet containing a two figure sum of cash, and cards was taken, and they left the house.
The incident happened between 11.30pm on November 10 and 12.30am on November 11.
The victim was taken to hospital for injuries, which were not believed to be serious.
An 18-year-old man has been arrested on suspicion of assault, and released on police bail until December 8.
Anyone who may have information about the incident, specifically who may be able to give descriptions about those involved, is asked to contact Dc Marc Makin at Grays CID on 101, or Crimestoppers anonymously on 0800 555 111.