Nathan Matthews had murdered Becky and dismembered ... from an early point” Watch the full interview above. 'The Murder of Becky Watts: The Police Tapes ' is on ITV tonight at 9pm.

When 16yearold Becky Watts went missing in 2015 it sparked a major police investigation to find the teenager But only two people knew where she was her stepbrother Nathan and his girlfriend Shauna ...

One of Becky ... part in the murder of the teenager in 2015. Becky, 16, was killed in a sexually motivated kidnap plot in ...