An 84-year-old Armadale man has been robbed in his own home by two bogus callers.
The pensioner was alone at his home in Mayfield Drive on Saturday when two men came to his door.
They claimed to be from the "Gas Board" and asked to check if he had a gas leak.
After gaining entry, the men searched the rooms before stealing his bank card, utilities cards and robbing him of a three-figure sum of cash.
The incident happened at about 06:00 and the men made off towards Mayfield Court, leaving the victim shaken.
Police are looking for a white man, aged 30-40, 5ft 10in tall with an Irish accent.
The second man was also white, aged 30-40, 5ft 7in tall, of stocky build. He had a local accent.
Both men were wearing glasses and hi-vis vests, dark jackets and jeans, brown shoes, black balaclavas and gloves.
Det Con Jo McCall, of Livingston CID, said: "This was a frightening incident for the elderly victim within his home, which has naturally left him shaken.
"We are now appealing for witnesses who may have seen the suspects, or who recognise the descriptions to come forward.
"We'd also like to remind the public to be vigilant and ensure you ask for identification and, if in any doubt, do not let the persons in to your home until their identity can be verified by the agency or company.
"Always remember you are under no obligation to let a stranger into your home if you are unsure."