Several new witnesses have been interviewed by police probing the murder of Nairn banker Alistair Wilson.
The latest revelation was made as it emerged Police Scotland spent more than £6,000 on overtime and accommodation in the last year as they continue their hunt for a killer more than a decade after the horror doorstep killing in the seaside town.
Detective Superintendent Gary Cunningham, the senior officer leading the inquiry, told The Press and Journal: “Following a renewed media appeal last year several members of the public contacted us passing on information and different theories.”
He renewed an appeal for anyone who may have been reluctant to come forward with information almost 14 years ago to do so now – particularly as the passage of time “can lead to significant changes in people’s associations”.
He said: “The murder of Alistair Wilson is subject to a through and ongoing investigation by Police Scotland.
“We continue to investigate all of the information which we receive.
“We also continue to review all of the information which has been gathered over the course of the investigation.”
He added: “It cannot be stressed often enough that this crime has left a family devastated.
“Police Scotland is committed to finding the answers for them and bringing the offender to justice.
“Someone out there knows why Alistair Wilson was killed and who was involved in his murder.
“The passage of time can lead to significant changes in people’s associations. Those who may have been reluctant to come forward with information years ago, for whatever reason, may be more willing to do so now.”
Police Scotland was unable to provide an annual cost of the investigation under Freedom of Information laws, saying it was “difficult to quantify”, particularly as the number of officers – and the time they spend on the case – fluctuate.
However, they did provide information relating to “associated costs” of the ongoing investigation, which revealed £6,177.04 was spent in 2017/18, including on overtime (£3,965) and hotel accommodation (£1,754.95).
This compared with £6,712 the previous year, £16,050 in 2015/16, almost £4,000 in 2014/15, and £31,988 in 2013/14.
A spokesman said: “Under new procedures introduced by Police Scotland, the murder of Alistair Wilson is now subject of a homicide governance review, which is looking at previous investigation strands to ascertain if all possible lines of inquiry have been thoroughly exhausted.
“Over the course of the past years, detectives have worked tirelessly using a wide range of methodologies, seeking expert help from throughout the UK and considering advances in forensic science all in an effort to help detect this highly unusual crime.”
