Detectives are appealing for any witnesses to get in touch.
The flames are now under control and firefighters are working to dampen the area down.
The grassland fire was caused by a BBQ where people were camping.
Vamshi Krishna Mandala's family tell the BBC of their "profound grief" over his death.
Forensic teams are working to formally identify the two people killed in the crash.
A church minister says the deaths of two people in Ongar have been traumatising for local people.
The Air Accidents Investigation Branch has sent investigators to the scene in Essex.
People wanting to build major developments no longer have to apply to Epping Forest District Council.
An inquest into Paul Hardcastle Jr's death is suspended so police can continue their investigation.
