Officers are appealing to the public to help find a 23-year-old woman missing since Monday.
Kayley Shaw left her home address in the Threemiletown area around 4.30am that morning and was believed to be in the Biggar area by around 4.30pm.
Kayley is described as white, five feet three inches tall, of slim build. She has a pale complexion and fair hair, usually worn in a ponytail.
She may be wearing a blue bubble jacket, blue jeans and trainers.
She is believed to be driving a grey/silver Renault Modus, registration YE56 CVO.
Constable Murray Alexander, of Broxburn West Main Street Police Station, said: “We are becoming increasingly concerned for Kayley. We are appealing for anyone who may have seen her or has any information as to her whereabouts to get in touch.”
Anyone with any information should contact Police Scotland on 101, quoting incident number 3508 of 9 December.