Police were called to Spalding’s district council offices to investigate an alleged assault when tempers flared over a controversial planning application.
The planning committee had approved plans for 87 “eco” homes at Long Sutton’s Butterfly Park when opponents and supporters clashed outside the council chamber.
Yesterday a police spokesman said: “The incident is being dealt with as a complaint of common assault and enquiries are ongoing.
“No arrests have been made but the suspect will be interviewed about the incident.”
Police say the complaint relates to a 42-year-old man allegedly being assaulted by a man of 52.
Planning chairman Roger Gambba-Jones dismissed the idea of spending council taxpayers’ cash on security to prevent similar flare-ups.
He said: “I would not think there was anything we could do about that.
“Even if we had three or four security blokes around they would not have been able to stop a flash in the pan incident like that.
“This happens every day in court buildings – it’s just impossible to do anything about it.”
Coun Gambba-Jones says he does not know precisely what happened, but while he regrets there was an incident in the council building he would never countenance excluding the public from meetings.