Police are appealing for information about Adam Daniel McGrath, who was last seen on Monday morning.
The 58-year-old was last seen at 5:30 am on 13 May 2024, at his home in Rue Du Maupertuis, St Clement.
He was heard leaving the house early in the morning, described as 'unusual', and took the family car.
The white Ford Fiesta Zetec was found parked at Grosnez Castle, in St Ouen, later in the afternoon.
Adam is described as 5 feet, 9 inches with a broad build, and is thought to be wearing a black or navy short-sleeved top, dark grey or black wide-legged tracksuit bottoms (either Lonsdale or Adidas) and black Skechers.
Police ask anyone who may have seen him or his car to come forward.
Adam Daniel McGrath
Rescue workers have searched the headland where the Ford car was found.
Police dogs, Jersey Coastguard, lifeboats, Jersey Search and Rescue, Channel Islands Air Search, Jersey Fire and Rescue and honorary officers are also assisting in the search.
The main focus of the search efforts has been in the northwest of the island with other areas highlighted.
The force has asked that despite islanders being keen to help in the search, the area is kept clear to allow the search and rescue operations to continue unhindered.
Police would like to speak to anyone who has contacted Adam last week to come forward and call on 01534 612612 or Crimestoppers anonymously on 0800 555111.
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