An air ambulance has landed in Leyland in response to an incident at the Tesco superstore.
The air ambulance touched down in the cricket field at Fox Lane Sports and Social Club at around 12.20pm and was joined by two road ambulances at the Tesco superstore in Towngate.
North West Ambulance Service (NWAA) said paramedics had responded to a "medical emergency" at the store.
A man was taken to hospital by road ambulance at around 1pm.
Customers had been asked to leave the store at 12.10pm after a customer was taken ill.
The store reopened shortly after 12.40pm.