Two men on a moped pulled up on a Sheffield street and stole a van.
South Yorkshire Police said the white Ford Transit van was stolen from outside a place of work in Long Acre Way, Halfway.
The crooks struck at 9.25am last Wednesday.
Police officers in Sheffield are also investigating the theft of a Mazda from Spinkhill Drive, Woodthorpe, in the early hours on Sunday.
The car was found close by a short time later.
Anyone with information should call South Yorkshire Police on 101.