Police are searching for a teenager who went missing after a birthday party in Cheshire at the weekend.
Nathan Taylor, 18, had been at the Bridge Bar in Latchford village with family and friends on Saturday night.
He was last seen leaving the bar alone at about 23:30 GMT. Police are trying to trace his last steps with the help of witnesses and CCTV footage.
Detectives said the search was focused around the Kingsway and Latchford areas of Warrington.
When he was last seen, the Warrington Collegiate student from Warrington was wearing a long-sleeved grey sweatshirt with a distinctive emblem of two tigers on the front and black skinny jeans.
He is described as white, 5ft 7in (1.7m) and slim. He is clean shaven with brown eyes and short hair with a fringe to one side.
Supt Martin Cleworth said: "We are extremely concerned for Nathan′s welfare, especially given the exceptionally bad weather conditions we experienced last weekend.
"We have a significant amount of resources committed in the search for Nathan, and understand that this is completely out of character for him to not be in touch with his family or friends."
Anyone with information is urged to contact police.