Thames Valley Police is appealing for witnesses following an aggravated burglary in Oxford.
It happened at around 12.30am on Saturday (6/7) at a property in Marshall Road.
A man was walking through the front door of the house when two men, armed with a hammer, a hand gun and a knife, pushed him and ran into the property.
A woman who was also in the property was then threatened and assaulted by the offenders when she tried to stop them from grabbing her handbag.
The offenders then ran off along Willkins Road in the direction of Oliver Road.
The woman sustained injuries that required hospital treatment. She has since been discharged.
The offenders are described as two men, wearing dark clothing and balaclavas.
Investigating officer, Detective Constable Charlotte Oliver, of Force CID, based at Oxford police station, said: “This was a distressing incident for the victims in which one of them required hospital treatment for their injuries.
“I am appealing for anyone who may have witnessed what happened or have any information to please come forward.
“I would also urge people to check any CCTV or dash-cam footage in case it may have captured the offenders.
“There will be an increased police presence in the area as officers make enquiries.
“Anyone with information can contact police on 101, quoting reference ‘43190204528’ or make a report online.
“Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.”