"This was an incredibly nasty incident and the staff were very shaken but fortunately unharmed, which is our number one priority.
"We will be offering them any assistance and any support they require after this terrible incident.
"We are also working with the police and hopefully witnesses will come forward to help catch these people."
More top news
Starting dry today before further rain or showers blow in. Becoming very windy through the afternoon with gales possible in places.
A crowd-funding campaign to buy The Duke of Marlborough pub in Somersham near Ipswich has reached £200,000.
A very windy and wet night in store this evening with gales- some severe on Sunday.