A post mortem into the death of a primary school pupil who died at Thame Leisure Centre has confirmed he drowned.

Nathan Matthews, 11, a pupil at Stokenchurch Primary School, died after diving for a rubber ring at the recently opened swimming pool on Monday.

He was one of 88 pupils enjoying a swimming lesson.

A Health and Safety Executive investigation is underway although the leisure centre has now reopened.

Nathan's parents, Terry and Penny Matthews, had feared their son may have been held under water as he had previously been bullied at school.

But Thames Valley Police and Stokenchurch Primary School headteacher Andrew White said they were not treating his death as suspicious.

Last night, a spokesman for Buckinghamshire County Council said: "The council has, as it does in all such cases, instigated its own internal inquiry."

Mr White has visited Nathan's parents and the school is now looking at ways of celebrating Nathan's life.

An inquest into Nathan's death is due to be opened and adjourned tomorrow. Pupils have already written poems, cards and drawn pictures, but a special ceremony will be held at the school's annual summer leavers' service at the end of term.