PART of Broughton Close in Marston has been closed off due to a "fear for welfare" incident.
Oxfordshire Fire and Rescue Service confirmed it had crews in the Old Marston area as part of an "ongoing joint operation with police."
A spokeswoman for the service refused to release any more information, saying it was a "police operation."
Thames Valley Police have not yet responded to requests for comment.
The force did tweet out that they were dealing with a "fear for welfare" incident and said there was no risk to the public.
Witnesses at the scene said a section of the road had been cornered off and added that police and fire crews were there.
Ambulances are also on scene and a street triage nurse was also seen in the street.
The entrance to Broughton Close has been closed off and police officers were seen talking to residents in houses there.
Our top stories
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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