Bogus police officers are being hunted after they called at two homes in Rotherham.
They called at homes in Thorpe Hesley and Kimberworth on Friday, May 5 and Saturday, May 6 and detectives suspect they were planning to steal from their victims.
In the first incident in Thorpe Hesley, a man called at the home of an 84-year-old woman and claimed to be a detective investigating an attempted break-in.
He walked into her house uninvited and told her somebody had been trying to break in and that he was there to help.
When challenged to produce formal identification, the man and an accomplice fled.
One of the men was white, around 5ft 2ins tall, in his early 30s and of a medium build.
He had dark hair, which was swept back and was clean shaven and wearing a navy blue top and dark trousers.
The other man was around 5ft 5ins tall, of a medium build, between 30 and 35 years old and had black hair.
He was wearing a navy fleece.
In the second incident, at 1.55pm on Saturday, two men called at the home of a 36-year-old woman in Kimberworth.
They drove off in a silver car when she asked for proof of identification.
One man was white, around 6ft tall and was wearing a grey suit.
The other was white, around 5ft 5ins tall and was wearing a black suit.
Anyone with information should call South Yorkshire Police on 101.