Box of faeces left outside Conservative MP Siobhan Baillie's office in Stroud

The box was discovered by staff outside Siobhan Baillie's office in Stroud Credit: PA images

A box containing faeces was left outside an MP's constituency office in Gloucestershire.

The carton also contained a derogatory message and was found on the doorstep of Conservative MP Siobhan Baillie's office in Stroud.

Staff were alerted to the unattended box on Wednesday 2 November, and say police are investigating the incident.

The box was found by staff outside of the MP's constituency office Credit: Siobhan Baillie's office

Following the incident, Siobhan Baillie wrote on Twitter: "I have a zero tolerance for this sort of behaviour and my staff, who are caseworkers helping local people with their issues, should not have to deal with things like this."

She added: "There are plenty of ways to make a point about politics or governments without resorting to putting excrement in a box.

"Because of the nastiness we face, many decent people are thinking twice about standing for public office."

A spokesperson for Gloucestershire Police has said: "Police are investigating an allegation of harassment after an offensive item was left outside of the constituency office of Stroud MP Siobhan Baillie.

"We are taking this incident of harassment seriously and ask that anyone with information contacts Gloucestershire Constabulary through the website and quote incident 212 of 2 November."