A train passenger had a bag containing £15,000 in cash stolen from him as he slept on a Virgin train from Liverpool to Runcorn.
British Transport Police (BTP) released a CCTV image of the man they would like to speak to in connection with the incident, which took place on March 1 at about 9am.
DC Dominic Wilcox said: “The man had planned to travel to Stafford to purchase a car – and was carrying the cash in a bag.
“The victim dozed off and as the train arrived at Runcorn, a man grabbed the bag from the seat next to the victim and quickly left the train.”
BTP appealed for anyone with information to come forward.