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.
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Manchester United beat Ajax 2-0 to win their first Europa League title on an emotional night in Stockholm.
United in grief, the people of Manchester have come together in defiance to the suicide bomber who killed 22 people on Monday evening.
Hashem Abedi, who was held in Tripoli on the same day his father was arrested, was planning terror in the Libyan city, officials have said.