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
The rail union have slammed the move saying China is set to make "a killing at the British taxpayers' expense".
US-backed rebel fighters say they have taken control of a key airbase near the so-called Islamic State's stronghold of Raqqa.
A primary school has taken action after pupils brought in an variety of "worrying" packed lunches - including a two-day-old McDonalds.