An air ambulance was called to Teesport yesterday evening after a "medical incident" near to the site's Tesco distribution facility.
A helicopter and vehicles from the North East Ambulance Service attended the incident in the Redcar and Cleveland area, with staff working to stabilise one patient.
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A spokesperson from the Great North Air Ambulance said: "Yesterday our critical care team was activated at 5.19pm to reports of a medical incident in the Teesport area.
"We had a paramedic and doctor on board our aircraft and they arrived on scene at 5.27pm.
"Our team worked alongside the North East Ambulance Service (NEAS) to assess and treat a patient and the patient was taken to hospital by a NEAS road crew, accompanied by our team."
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