Police said there was only minor damage to the building and no-one was injured. A man has been arrested.
Mr. Boles, said:
"Obviously I deplore this act of violence. The incident is being investigated by the police and I know that everyone will do whatever they can to support the investigation. In the meantime, we should all carry on doing our jobs as normal."The BBC Reported that Ms Caroline Glithero, who lives nearby, said she heard two explosions about 45 minutes apart.
"I heard two very loud bangs and on the second one I went to see what it was and found a lot of debris and a window broken."Lincolnshire Police said a 24-year-old man had been arrested and was helping police with their inquiries.
A spokesperson said early indications suggested the incident was not linked to any wider issues or recent events in the county.
Lincolnshire's Members of Parliament have been targeted in recent years, including Gainsborough's Edward Leigh MP who was targeted with hoax anthrax packages last year.