Wiltshire’s Police and Crime Commissioner has said news showing Wiltshire Police's ability to investigate crime has deteriorated since it was placed into special measures "simply isn't good enough".

The revelation came in a report released on Tuesday (December 20), and revealed that Wiltshire Police’s performance in investigating crime effectively had declined since it was last inspected in the summer.

READ MORE: Wiltshire Police put into special measures

Many investigations were not properly reviewed by supervisors and victims were sometimes not updated throughout investigations.

Police and Crime Commissioner for Swindon and Wiltshire, Philip Wilkinson, has now reacted to the damning news in a statement on Tuesday.

“Today’s HMIC update report will undoubtedly cause concern among crime victims and, in fact, all residents who deserve to see a police service which meets their needs at a time when they are most vulnerable,” he said.

“While there may be some small areas of improvement, I share those valid concerns that in many areas reviewed by HMIC, improvements are not happening as quickly as the public, or I, would want.

READ MORE: Wiltshire Police's ability to investigate crime effectively has declined

"My job is to ensure the Chief Constable is being held to account for the service delivered by Wiltshire Police so tangible change can be seen, and felt, by those who call upon the police in their hour of need.

"I have been robust in that challenge and scrutiny – and I have been extremely clear this slow level of improvement, and deterioration in some areas, simply isn’t good enough.

“The Force has recognised the need for rapid change and has committed to supporting victims, improving investigative standards and identifying vulnerability at the earliest opportunity but there must also be the requisite strategic planning by senior leaders in place which enables frontline officers and staff to deliver that change.

"I will continue to challenge for those strategic improvements and leadership on behalf of the public.”

Three causes of concern were highlighted in the report that was issued by His Majesty’s Inspectorate of Constabulary and Fire & Rescue Services.

Wiltshire Police were found to be failing to understand and promptly identify the vulnerability of victims at the first point of contact and they do not protect vulnerable people from harm to an acceptable standard.

Additionally, the report found that the police force does not have adequate strategic plans in place.