Police believe a robbery of the Oliver Adams headquarters in Northampton carried out by three men may be linked to a robbery of a taxi firm in the town on the same day.
Three men broke into the Oliver Adams premises in Gladstone Road between 10.15pm and 10.30pm yesterday (Thursday) through the main door.
They went upstairs and, as they were searching the office, they were disturbed by a member of staff and the alarm was activated.
The robbers ran out of the building through the front door and turned left into Gladstone Road.
The men are described as stocky and were wearing dark clothing and had their faces covered.
Officers believe the incident may be linked to a robbery at Phoenix Class car hire in Rothersthorpe Avenue, which happened in the early hours of Thursday.
In that robbery, three men armed with a spade and wearing ski-type masks restrained a member of staff and forced their way into an office, stealing keys and cash.
Anyone who may have seen the men running from the premises or any suspicious vehicles in the area around the time of the incident, are asked to contact police.
Witnesses to the incident, or anyone with information, should call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.