Two robbers threatened security guards in the city centre early this morning before making off with cash boxes.
The incident took place at about 6.30am outside the Tesco Express store in London Road, next to the railway station.
The thieves grabbed the money before making off in a vehicle.
Police said it was still too early to give any further information.
A spokeswoman for the police said: "We are looking at things like CCTV to give us more clues about what happened.
"We know that at 6.26am two men in a vehicle threatened security guards before making off with cash boxes. No one was injured.
"Forensic examinations of the scene are taking place and we are appealing for any witnesses who may have seen something."
Anyone with information can call police on 101or alternatively contact Crimestoppers on 0800 555 111.
The incident took place at about 6.30am outside the Tesco Express store in London Road, next to the railway station.
The thieves grabbed the money before making off in a vehicle.
Police said it was still too early to give any further information.
A spokeswoman for the police said: "We are looking at things like CCTV to give us more clues about what happened.
"We know that at 6.26am two men in a vehicle threatened security guards before making off with cash boxes. No one was injured.
"Forensic examinations of the scene are taking place and we are appealing for any witnesses who may have seen something."
Anyone with information can call police on 101or alternatively contact Crimestoppers on 0800 555 111.
