Emergency services were called to Bristol city centre this afternoon (November 25).
A police van, police car and ambulance were picture in Lower Castle Street.
Avon and Somerset Constabulary has confirmed officers were called to reports of a concern for welfare.
Police remain at the scene after being called to the road shortly after 1.30pm.
The ambulance service added a crew attended the incident involving one patient at around the same time.
A spokesperson said: "South Western Ambulance Service was called at around 1.40pm about an incident involving one patient on Lower Castle Street, Bristol.
"We sent an ambulance crew and a senior paramedic to attend the incident."
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