A murder investigation has been launched after the pensioner shot with a crossbow died on Saturday morning.
74-year-old Gerald Corrigan was fixing his satellite dish outside his Holyhead home when he was shot with a crossbow in Anglesey in April.
The bolt travelled through a significant part of his upper body, narrowly missing his heart and then through his right arm.
Mr Corrigan suffered "horrific injuries" and remained unconscious in hospital until Saturday morning when police confirmed he had died.
North Wales Police describe the investigation as "the biggest murder investigation on Anglesey since 2001". Detective Chief Inspector Brian Kearney said Gerald Corrigan's death was "devastating".
Mr Corrigan worked as a lecturer in photography and video in Lancashire before retiring to Anglesey more than 20 years ago.
Police are also appealing for businesses selling crossbows, bolts and accessories to get in touch to help the investigation as they continue to search for the person responsible.