The family of a six-year-old boy staged his kidnapping because they thought he was too nice to strangers, Missouri police say.

The boy's aunt, Denise Kroutil, allegedly asked a colleague, Nathan Firoved, to help "scare" her nephew.

Ms Kroutil, Mr Firoved and the boy's mother and grandmother, who allegedly also took part, have been arrested.

Yvette McCullough reports.