Officers from the North and East Neighbourhood Policing Team have warned residents to be on the look out for possible scam leaflets being delivered in and around Halifax.
The leaflets often appear to be promising to collect unwanted goods, especially clothing, and promising to then pass them on to a particular charity.
They usually contain a mobile phone number and even a registered charity number.
“These leaflets can appear to be genuine and be of a very good quality,” said Insp Stuart Spencer of the North and East NPT.
“And sometimes they can be quite amateurish in design, so we would just urge people to exercise some caution when handing over goods.”
He urged people to be vigilant.
“They can appear to be promising one thing. but when you have a look in closer detail not all is as it seems.”
Officers are also targeting illegal scrap metal collectors who are taking waste and scrap metal without the necessary licence and documentation.
“I would urge people with concerns about leaflets or suspicious vehicles in the area to contact police on 0845 6060606,” added Insp Spencer.