Police have secured the scene of the helicopter crash at Gillingham on the Norfolk/Suffolk border and are now waiting for specialist air accident investigators to arrive at the crash site.
Two ambulance officers, three ambulances, two doctors and one rapid response car attended the scene.
Norfolk Police said the crash site had been cordoned off. It is 45 miles from the spot where four crew members died when a US military helicopter crashed on a training mission in a nature reserve in Cley-next-the-Sea, Norfolk
A spokesman for the Air Accidents Investigation Branch said it will be sending a team to investigate the helicopter crash in Gillingham, near Beccles.
Four people are believed to have died in the incident.
East of England Ambulance Service spokesman said its resources have been "stood down from the scene":
Sadly, it is believed that four people in the helicopter are believed to have died in the crash. Ambulance resources have now been stood down from the scene.
Our thoughts are with the family and friends of those who have lost their lives tonight.
A local businessman near the area where a helicopter has crashed has described "very foggy" conditions in the area.
Roland Bronk, owner of The Swan House inn and restaurant in Beccles, said he also heard customers talk about "a lot of police activity and ambulances".
Four people are believed to have been killed in the crash.
Four people are believed to be dead after a civilian helicopter crashed in Gillingham, near Beccles, Norfolk Police told ITV News Anglia.
An eyewitness at the scene of a helicopter crash in Gillingham, Norfolk sent ITV News an image of the scene.
An eyewitness has told ITV News that there are around nine police cars at the scene of a helicopter crash in Gillingham, near Beccles, Norfolk.
- Around four ambulances
- A helicopter hovering overhead
- One fire engine is at the scene
The helicopter crash site in Gillingham, Norfolk, is around 45 miles (72 kilometres) from the spot where four crew members died in January when a US military helicopter crashed on a training mission.
A spokeswoman for East of England Ambulance Service said:
The East of England Ambulance Service NHS Trust (EEAST) was called at 19:45 tonight (March 13) to reports of a helicopter crash near Gillingham, Norfolk.
EEAST sent a number of resources to the incident including two ambulance officers, three ambulances, two doctors and one rapid response car.
A resident has described seeing a flurry of activity in Gillingham, Norfolk where a helicopter has crashed this evening.
“From about eight o’clock there have been loads of police cars, fire engines and ambulances going past here," Lorraine Greenwood told the Eastern Daily Press.
“I don’t think they were sure where it was in the fog because some were going round the roundabout and back again. I didn't hear any crash but I did see two other helicopters that looked like police helicopters circling.”
Emergency services remain at the scene where a police cordon is in place.