They said: “We are devastated by the death of Iain. We would like to thank the community for their support and kind tributes to him.
“It has brought us comfort at this difficult time. We ask for privacy as we continue to come to terms with what has happened.”
Police urged anyone with further information about the incident to contact them, external.
Det Insp Caroline MacKay said: “Our thoughts remain with Iain’s family and friends.
“We have specially trained officers supporting them at what is a very difficult time.
“I’d like to thank the local community for the support and patience shown while inquiries were conducted in and around the area.”