Residents in Ferrybridge are being urged to check outbuildings as the search for missing mum Vicki Milton enters its fourth week .
Concerned friends of the missing 42-year-old will hold searches around the area this weekend following a meeting with police.
Mrs Milton was last seen leaving her home in Ferrybridge at around 7.45am on Thursday, April 17.
Police said since her disappearance, specialist search teams, police helicopters, divers and police dog units had been involved in the search around Ferrybridge and Knottingley.
Searches have also been carried out at Fairburn Ings nature reserve, which Mrs Milton liked to visit.
Det Insp Michelle Martin, of Wakefield CID, said: “A massive effort has been underway to find Vicki and I want to thank residents in Knottingley for all the concern they have shown and offers to help.
“It is now four weeks since Vicki went missing and clearly as time has passed we have grown increasingly concerned and the ordeal of not knowing what happened to her has grown worse for her family.”
Mrs Milton is described as 5ft 2in tall, of a large build, with very short white blonde hair and blue eyes. She has a tattoo of a flower on her left wrist and tattoos of a flower and a butterfly on her left hand.
She was last seen wearing a black woolly jumper, dark denim jeans and grey Converse trainers.
Det Insp Martin said: “Every possible resource we have access to has been used in the hunt to find Vicki in what has been a painstaking and very difficult operation.
“With searches of the most obvious locations now concluding, we now need that one vital piece of information to help us identify where Vicki might be.”
Anyone with any information should contact Wakefield CID on 101.