Emergency services are giving a man first aid following an incident on a busy pedestrian crossing in Peterborough city centre.
Police and ambulance are at the scene at the crossing on Bourges Boulevard near Rivergate.
The air ambulance has also landed near-by.
A police spokesman said: “We were called at 10.08am today (14 August) with reports of a medical episode on Bridge Street, Peterborough.
“Police and ambulance crews are at the scene.”
One eye witness said the paramedics were attempting to resuscitate the man.
A spokesman for the East of England Ambulance Service said: “We were called to Bridge Street in Peterborough shortly after 10am today to reports of a medical emergency. An ambulance, ambulance officer, rapid response vehicle and the Magpas air ambulance attended, with crews treating a male patient at the scene before transporting him to Addenbrooke’s Hospital for further assessment and care.”