A quantity of cash was stolen from the NCP office in Lincoln after a break in.
The incident happened at the car park premises on Brayford Street between 10pm on May 4 and 7am on May 5, the day the incident was reported.
The offender broke in and targeted the safe on the premises, taking cash.
Officers are appealing for anyone who may have seen or heard anything or anyone suspicious in the area to contact Lincolnshire Police on 101, quoting incident number 65 of May 5, 2014.
Alternatively contact Crimestoppers anonymously on 0800 555 111.