The search for missing Leeds teenager Ben Manning was set to enter its fifth day this morning.
Almost 5,000 people have now signed up to Facebook group 'Find Ben Manning' and more people are volunteering to join the search for the Brigshaw High School pupil.
* Click here to follow the YEP on Twitter.
Celebrities are doing their bit to help the search on social networking website Twitter.
* Click here to 'Like Us' on Facebook.
Davina McCall, Dom Joly and Leeds actress Angela Griffin are among the famous names who have tweeted appeals for information about Ben to their followers on the site.
Ben, 17, from Swillington, went for a drink with friends in Wakefield city centre on Friday night and has not been seen since the early hours of Saturday.
Police yesterday identified a further sighting of Ben near the JCT 600 garage on Denby Dale Road.
Officers previously revealed he walked from Westgate, down Queen Street, along George Street at the side of Gala Bingo across Ings Road and along Denby Dale Road at around 1.30am on Saturday.
They have been searching extensively, including land in the Thornes Wharf area of Wakefield.
Ben's family and friends are also continuing to search Wakefield city centre and the surrounding areas.
Ben had been dropped off in Wakefield city centre by his mother
Christine at 8pm on Friday.
He had been to watch his friend's band play a gig in The Black Flag on Smyth Street.
Ben's last contact with friends or family was at around 1.30am on
Saturday when he sent a text message to his mother.
He is described as white, around 5ft 8ins tall, of slim build, with light brown hair.
Ben was wearing white Converse high-tops, grey jeans, black T-shirt and a grey fleece-type jacket.
Call police with information via 01924 334716.