Thames Valley Police is appealing for information in connection with an aggravated burglary in Iver.
The offence occurred at a property in Wood Lane at about 9.40pm last night (15/5).
Four offenders armed with weapons, a knife, a metal pole and a stick, forced their way into a house
The family of three were threatened, with the father dragged out of bed.
The offenders conducted a search of the property and left the scene with cash, mobile phones, a Rolex watch and a diamond ring.
The offenders are all males. The first offender is white, about 5ft 1ins to 2ins and of medium build. He has an Eastern European accent. He was wearing a black mask.
The second offender is about 5ft 2ins to 3ins and of medium build. He was wearing a black mask.
The third offender is about 5ft 8ins to 9ins and of small build. He was wearing a brown, woollen mask.
The fourth offender is white, about 5ft 8ins to 9ins and of small build. He was wearing a brown, woollen mask.
Investigating officer, Detective Sergeant Luke Pratt of Force CID said: “This is a shocking offence on a family in their own home, where they should feel safe.
“I would appeal to anyone with any information about the offence to contact the force as soon as possible.
“The easiest way to leave us information is on our website at https://www.thamesvalley.police.uk/tua/tell-us-about/cor/tell-us-about-existing-case-report/ quoting investigation reference number43190146082, or you can call 101.”