A 10-year-old Muslim boy was quizzed by police after mistakenly writing that he lived in a "terrorist house" rather than a "terraced house", according to reports.
The youngster made the error during an English lesson at a Lancashire school, and the following day officers arrived at his home to interview him and examine the family laptop.
Speaking to the BBC, the boy's family said the incident on December 7 had shocked them and asked for the police and school to apologise.
His cousin, who has not been named to protect his identity, said: "You can imagine it happening to a 30-year-old man, but not to a young child.
"If the teacher had any concerns it should have been about his spelling.
"They shouldn't be putting a child through this. He's now scared of writing, using his imagination."
She added that she initially thought the incident had been a joke.