Police officers are understood to be at a number of properties in Writtle belonging to members of Peter Reeve's family.
The media have been asked not to approach them as they are described as distressed and possible witnesses.
More top news
Britain is to be lashed by gales of up to 70mph today as Storm Clodagh makes its arrival from the Atlantic.
UK defence secretary says so-called Islamic State group will only be defeated by force.
Sheriff's deputies were called to the scene in LA County after residents reported hearing muffled crying.