Police are hunting for two masked men who held up Bridlington’s TSB bank in Manor Street on Saturday morning.
It is thought that the two men, threatened four staff members before tying them up and demanding cash as they prepared to open up.
The suspects then made off from the bank in a white hatchback leaving the staff members shaken but otherwise unhurt.
A spokesman for Humberside Police said: “The alarm was raised at around 9.10am soon after the robbery had happened.
“At this time it appears two males have carried out the robbery, threatening staff and tying them up in the process.
“We are treating this incident very seriously and would urge any members of public with information to come forward.”
Anyone with information should contact Humberside Police right away on 101 quoting log 206 of 20/09/14 or alternatively call Crimestoppers who will take your information in confidence on 0800 555 111.