A man who claimed to be a police officer has carried out three burglaries and one attempted burglary over a two hour period.
Cops believe the man who had accomplices with him targeted addresses in Loughborough, Narborough and Highfields and Beaumont Leys within Leicester.
The incidents happened from 7pm onwards police received reports that a police officer forced their way into the house and stole property.
One of the occupants, a man in his 80s, was stabbed with a screwdriver. He was left with minor injuries.
A woman in her 70s was also assaulted before the man left, taking jewellery.
A man knocked on the door of a property and pushed past the occupant, a woman in her 70s, when she opened the door.
The man stole jewellery, cash and a mobile phone before leaving.
The third incident happened just before 8.30pm, four miles away at an address in Mill Hill Lane, Highfields.
A man knocked on the door of a house, claiming to be a police officer.
When the occupant, a woman in her 70s, opened the door, the man forced his way inside.
He pushed her to the floor and stole money and jewellery before leaving.
At about 8.45pm, police received a report that a man had visited an address seven miles away in Stainmore Drive, Narborough, and said he was a police officer.
However, the occupants became suspicious and called the police and the man left.
Detective Sergeant Scott Cairns, from the Complex Investigation team, said: “At this time, we’re linking each of the incidents as in all reports, the suspect told the victims he was a police officer.
“We think the same person or people are responsible for each incident.
“In each report, the man was wearing a high-visibility jacket and had their face covered. Given the time that each incident occurred, it’s believed the suspect or suspects used a vehicle.
“I’d like to speak to anyone who has any information or who was also visited by someone claiming to be a police officer but has not yet contacted police.
Any details you’re able to provide, no matter how insignificant you think they may be, could help our investigation.
“I’d also like to ask members of the public to remain vigilant. If someone visits your address and you are suspicious of who they’re claiming to be, ask for proof of identification.”
Anyone with information can call the police on 101.