Charity joins search for missing Hull man Stuart Gilson
Volunteers are joining a police search for a 21-year-old man who went missing a week ago after a night out.
Stuart Gilson was last seen on CCTV leaving Hull city centre on Saturday. He was reported missing the next day.
Hundreds of people have taken part in unofficial searches for him which have been co-ordinated on Facebook.
The latest search will see police scouring the banks of the River Humber, helped by Yorkshire and Lincolnshire Search and Rescue (YALSAR) volunteers.
YALSAR assists emergency services in searches for missing people across the Yorkshire and Lincolnshire regions.
Police and Alsar volunteers will search the Humber between the Humber Bridge and Paull.
A Humberside Police spokesman said: "Alsar are specially trained in searches of this nature and to ensure they can contribute fully, the public are asked not to come and assist."
The force said other searches were taking place in various locations across the city, including areas of waste land and outbuildings.
He added: "Further resources have also been conducting searches in marina areas along the River Hull.
"CCTV inquiries are continuing with civic, commercial and residential footage being recovered and reviewed."
Mr Gilson, of Annandale Road, Hull, is described as white, 5ft 7ins tall with a medium build and short dark brown hair.
He was last seen wearing a grey Luke branded polo shirt with a large lion emblem, G-Star jeans and black Fred Perry plimsolls with white laces. He was also carrying a wallet with a built in bottle opener with the words 'beer tokens' written on it.
His family said his disappearance was out of character.
More than 9,000 people have joined the group Missing Stuart Gilson on Facebook.
Police have urged anyone with information about his whereabouts to contact them.