Key Points:

Scientific evidence has been suppressed in the depositions hearing of Dean Stewart Cameron, 38, for the rape and murder of Papanui High School teenager Marie Davis.

Justices of the peace Percy Acton-Adams and Nick Atkins granted the suppression yesterday at the request of defence counsel Peter Doody.

Crown prosecutor Kathy Bell said 33 witnesses would be called at the hearing in the Christchurch District Court.