Becky Watts died from suffocation, grandmother tells ITV News in exclusive interview

By Rupert Evelyn, ITV News Wales & West of England Correspondent

Post mortem tests showed Becky Watts died as the result of suffocation, her grandmother has told ITV News in an exclusive interview.

Pat Watts said police released the details of the tests to the family but said the manner in which her 16-year-old granddaughter was found in Bristol still "doesn't seem real."

Ms Watts said: "I know all the gory details but I still really feel as if I'm watching someone else's family go through it.

"I've accepted it but I haven't - it doesn't seem real."

Becky was last seen alive at her home on February 19, her body parts were found by police in Barton Hill on March 2.

Today hundreds lined the street for her funeral in Bristol.

Describing her granddaughter as "funny, feisty, very witty", Ms Watts said she would have "loved to see her (Becky) grow up and have a great life, give me great grandchildren give Tanya grandchildren", but it's a future that has been "ripped away".

When Becky went missing, Ms Watts said she believed the teenager had simply run away and helped appeal for her to come home.

When a police family liaison officer told her the news that they had found a body and it had been "cut into pieces", she said her response to the officer was: "Christ, just when I thought it couldn't get any worse".

Becky's stepbrother Nathan Matthews has been charged with her murder.

Read more: Mother says 'time stopped' when Becky Watts was killed