Four people are believed to have been killed in a civilian helicopter crash in Norfolk
The emergency services were called at 7.30pm following reports the aircraft had come down in Gillingham, Norfolk close to the Suffolk town of Beccles.
Norfolk Police said the area of the crash site has been cordoned off.
It is not known what type of helicopter it is or how many passengers were on board.
The site is 45 miles from the spot where four crew members died when a US military helicopter crashed in Norfolk on a training mission in a nature reserve in Cley-next-the-Sea, Norfolk.
A spokeswoman for East of England Ambulance Service said: "We got called to reports of a helicopter crash near Beccles and we sent several resources to the scene, including doctors."
It is not yet known whether fog, which has formed in some parts of East Anglia tonight, played a factor in the crash.
In January, a Pave Hawk from RAF Lakenheath was taking part in a low-flying training exercise when it came down in a nature reserve in Cley-next-the-Sea in the county.
All four American crew members were killed in the crash. Residents described hearing a "'heavy and very unusual" noise from the helicopter seconds before the crash.
The aircraft was carrying munitions at the time of the crash and police subsequently cordoned off the area at they investigated the nature of the weaponry, which was later found to be bullets.
Roland Bronk, owner of The Swan House inn and restaurant in Beccles said it was "very foggy" in the area. Mr Bronk said he also heard customers talk about "a lot of police activity and ambulances".