Bedfordshire Police is advising pubs and businesses across Luton to be extra vigilant following a burglary at a fairground arcade at Wardown Park.
Offenders forced the rear door to gain entry to an arcade at around 5am on bank holiday Monday.
Several machines were broken into and a large quantity of money was stolen.
Police are advising employees to report any suspicious vehicles or visitors, ensure that doors and windows are kept closed and locked and to consider fitting security lighting, CCTV and alarms.
If anyone has any information, call 101.