Fire crews are dealing with a nitric acid leak at Heysham Port.
Lancashire Fire said six fire engines are dealing with a chemical leak at Heysham Port this morning.
A Lancashire Fire spokesman said: “The small leak involves a tanker containing nitric acid on land.
“We have firefighters now accessing the vehicle in gas tight suits to assess the situation.
“Port Way at the port is currently closed to all vehicles.
“If you live close to the port, please stay inside and keep windows and doors shut.”