Two people have been taken to hospital following a fire at a pyrotechnics factory in Derbyshire.
Nine crews from three different fire services were called out to PW Defence on Wilne Road, in Draycott on Friday night.
The building is known locally as the "fireworks factory", but today the firm supplies the Ministry of Defence (MoD) with pyrotechnics.
The air ambulance, four ambulance crews and East Midlands Ambulance Service's Hazardous Area Response Unit were also called to the scene.
A spokesperson for the ambulance service said: "We were called at 9.05pm, January 20 2023 to Draycott in Derbyshire.
"The caller reported a fire in a building. We sent our Hazardous Area Response Team, four ambulances, two fast response cars and the Air Ambulance.
"Two patients were taken to the Queen’s Medical Centre, in Nottingham, by ambulance."
Derbyshire Fire and Rescue Service confirmed that a joint police and fire investigation will be launched.
A statement on the fire service website reads: "One fire crew remains on scene damping down and checking for hotspots at the scene of a fire at a commercial property in Wilne Road, in Draycott.
"Nine fire crews from Derbyshire, Nottinghamshire and Leicestershire were called to the incident at 21.12 hours on Friday 20 January.
"A joint police and fire investigation will commence later this morning.
"Derbyshire fire crews attending the incident were from: Long Eaton, Nottingham Road, Ascot Drive, Kingsway, Chesterfield with the aerial ladder platform, Melbourne and Ripley. Highfields and Stapleford attended from Nottinghamshire and Leicestershire's Castle Donnington.
"No further information is available."