British Transport Police (BTP) officers are appealing for witnesses after a Ford Focus vehicle was stolen from outside Shenfield rail station.
Investigators are urging anyone with information into the incident, which took place on Friday, 15 February, to come forward.
Sergeant Emma Weir, the investigating officer, said: "The victim left his blue Ford Focus RS at the Hunters Avenue car park, locked and secure, around 9.30pm on Thursday, 14 February.
"When he returned the following morning, he discovered his car had been stolen."
Officers have carried out a number of enquiries into the incident and believe the car was removed from the station around 10.10pm on Thursday evening.
Sgt Weir added: "I'd appeal to anyone who witnessed the incident, or who saw any suspicious behaviour in the surrounding area at the time, to come forward."
Anyone with information is urged to contact British Transport Police on 0800 40 50 40 quoting background reference B4/LNA of 03/05/2013. Information can also be passed to the independent charity Crimestoppers, anonymously, on 0800 555 111.