A woman in her 20s was detained by officers under the Mental Health Act and has been taken to a place of safety after an incident on a train.
Police were called to Shepreth station on Tuesday shortly after 10.30am to a report of an assault on board a train.
Officers from Cambridgeshire police attended and the train was held at Shepreth, but no victims of assault were identified.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here