Two masked men armed with a knife broke into a Doncaster house and demanded cash in a weekend raid.
They struck at a house in Redlands Crescent, Thorne, after pulling up in a black BMW saloon.
The incident has now sparked an appeal for witnesses or anyone with any information to come forward.
Detective Sergeant Debra Renwick, of South Yorkshire Police, said: “The men threatened two people inside the house and made demands for cash.
“One of the men is said to have been carrying a knife, although thankfully no-one was injured during the incident.
“They left the house empty-handed and we are keen to hear from anyone who has any information about this incident and, in particular, anyone who can help us trace the movements of the car prior to the incident.”
Call South Yorkshire Police on 101.
The incident comes after crime figures revealed a rise in the number of violent comes across South Yorkshire – although police say the increase is partly down to better reporting.
The amount of violent offences logged by South Yorkshire Police last year was up by nearly one-third (30 per cent) from 2015.
Robbery in the region was also up, by 25 per cent, and there was a 46 per cent increase in possession of weapons offences recorded, annual crime figures published by the Office for National Statistics revealed.
There were also more break-ins reported, with a 10 per cent rise in burglaries.
A spokesperson for South Yorkshire Police said: “In many cases, our local figures reflect the wider national picture, in which crime is on the increase across the board.
“The figures for South Yorkshire show that, during the year, recorded overall drug offences fell by 12 percent.
“Theft from a person is one per cent below the national average, while the figure for criminal damage is the same as the national average.”