A family in the North West has called for as many people as possible to come out and help them search for a loved one.
Jack Glenn was last seen yesterday afternoon, but it's understood he entered the River Foyle.
A major operation was launched by search and rescue teams to try and locate the 23 year old.
Anyone needing support or advice has been told to contact Lifeline on 08088088000 or Samaratans on 116123.
#GetJackBack pic.twitter.com/RRXWHvic1R
— Scott Keys (@EssKeys_) February 3, 2017
Peter Tait is a relative and says volunteers are needed to help search the riverbanks this weekend.
"Despite the unrelenting efforts of the Fire Service, PSNI and Foyle Search & Rescue, we have not been able to recover Jack from the River Foyle.
"We need help to search the river banks from New Buildings to the Foyle Bridge.
"We want to walk them during the hours of daylight from 9 o'clock to 5 pm meeting at the Peace Bridge entrance at Ebrington Square every hour.
"We propose to break into 4 groups to safely walk the footpaths on both sides of the river; Peace Bridge to Foyle Bridge and Peace Bridge to New Buildings.
"Please, please, please share so that we can get Jack home."
Q Radio spoke with Peter at Ebrington Square this morning:
Derry City and Strabane District Council is understood to be providing Marquees for volunteers.
The family will also use the Hashtag #GetJackBack to update members of the public.
Search parties will leave Ebrington Square near the entrance to the Peace Bridge every hour during daylight between 9am - 5pm.
Foyle Search and Rescue is carrying out a joint operation with Scottish rescue helicopter 'Halo 999' on the River Foyle pic.twitter.com/u9ScfLVyIW
— Q Radio News (@qnewsdesk) February 2, 2017