West Midlands Police are carrying out an investigation into alleged misconduct by officers based on the Bordesley Green ward in Birmingham.
Four officers, including the ranks of sergeant and constable, from the Birmingham East local policing unit have been suspended by the while the investigation takes place.
A West Midlands Police statement read: "The allegations involve mishandling of property taken from members of the public that could amount to theft. The enquiry came to light when some members of the team highlighted concerning practices."
Deputy Chief Constable Dave Thompson, who is heading the inquiry, said: "We expect the highest standards of integrity and honesty from those who serve with West Midlands Police.
"This inquiry will vigorously investigate any potential misconduct offences and the force will take appropriate action as necessary.
"The duties and commitments of the team are being managed by colleagues from Birmingham East who are ensuring that policing services are being delivered as normal.
"We are also working closely with communities within Birmingham East to endeavour that any of their concerns are resolved as soon as possible, and their trust and confidence in local policing continues."
The investigation has been voluntarily referred to the IPCC.