Officers investigating a crossbow shooting on Anglesey say they believe whoever discharged the weapon would have been 'significantly traumatised' by the incident.
Gerald Corrigan is in a critical condition after being hit while fixing a satellite dish near South Stack Road in Holyhead, in the early hours of Friday morning.
The 74-year-old was taken to Ysbyty Gwynedd with life-threatening injuries but has now been transferred to a hospital in Stoke on Trent.
North Wales Police say the crossbow bolt passed through Mr Corrigan's upper body and right arm leaving him with 'horrendous injuries.'
I am appealing to the person who discharged this weapon to come forward. This is an impartial search for the truth and I have no doubt that any person who discharged such a weapon accidentally at a human being would be significantly traumatised. You will be treated professionally by myself and my team of officers.
Police are also appealing for businesses selling crossbows, bolts and accessories to get in touch to help the investigation.
In a statement his family expressed their disbelief at the incident.
This is a horrific incident that has happened to our family. We cannot think of anybody who may have wanted to hurt our father and dear partner. We are trying to come to terms with this shocking incident.
Police are investigating whether those involved were engaging in ''lamping'' - a night hunting activity involving spotlights.