Five-year-old who died was sweet soul, says family
A five-year-old boy who was found dead on Sunday was "adored by all", his family said.
Lincoln Button died at an address in Windstar Drive, South Ockendon, Thurrock, Essex.
"Linc was a cherished, loved, sweet, beautiful young soul... he will be sorely missed every day," his family said in a statement.
Essex Police said a woman arrested on suspicion of murder remained in custody.
Officers said they were not looking to identify anyone else in their "extremely sensitive and complex investigation".
On Sunday, emergency workers were called to reports of serious concerns for a child and a woman shortly after 15:00 GMT.
The woman was taken to hospital, where her condition improved, said police.
Bonnygate Primary School, where Lincoln was a Year 1 pupil, described him as a "cheeky, smiley, happy boy".
"His love for school, laughter and cuddles will be remembered and missed dearly," a statement read.
The school said it was working with authorities and was being supported by Thurrock Council's education team.
'Unthinkable pain'
Det Ch Insp Alan Blakesley, who is leading the investigation, said: "Those involved are continuing to work around the clock to ensure that we understand the full circumstances of what happened in the lead up to Lincoln's death.
"I also want to reemphasise that at the heart of this investigation is the death of a young child with a family now facing an unthinkable pain."
Police have urged people not to speculate about the circumstances of the child's death.
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