1 of 6
The house in Crescent Road, Nairn, where Alistair Wilson was gunned down after his wife opened the door to the killer

2 of 6
Mr Wilson and his wife Veronica were putting their children to bed when the gunman came to the door.

3 of 6
Scenes of crime officers pore over the scene in the search for evidence

4 of 6
Police say they have no idea about the motive behind the killing of the father-of-two.

5 of 6
Some roads in the seaside town have been cordoned off as part of the police investigation

6 of 6
An appeal for information is being made, particularly to dog walkers who might have been in the area at the time of the murder