A couple were robbed in Shibden Park by two masked men armed with knives.
The incident occurred in the top cark park, off Shibden Hall Road, at around 5pm on Friday.
The couple, in a silver Volkswagen Golf R, were approached by two men wearing face coverings and carrying weapons.
The suspects threatened the couple before taking the keys and making off in the vehicle. No one was injured.
They are believed to have arrived at the location in a blue Honda Civic, which one of the suspects also left the park in. It is possible the two vehicles may have travelled in convoy along Claremont Road and towards Queensbury.
Detective Constable Lee Mason of Calderdale CID said; “Clearly this has been a frightening experience for the victims, who thankfully were unhurt.
“I would appeal to anyone who may have been at or near the top of the park on Friday evening who may have seen anyone acting suspiciously, or who may have witnessed the incident itself to come forward.
“Equally, I would appeal to anyone who may have seen either of the two vehicles in the vicinity to come forward with any information. Enquiries are ongoing.”
Anyone with any information is asked to contact DC Lee Mason at Calderdale CID via 101, quoting 13160442854. Information can also be passed anonymously to the independent crime fighting charity Crimestoppers on 0800 555 111.