Media playback is unsupported on your device

Hannah Smith death: Ask.fm 'to help police inquiry'

6 August 2013 Last updated at 22:48 BST

The father of a 14-year-old-girl, who was found dead in her bedroom on Friday, says she was driven to suicide by cyber bullying.

Hannah Smith, from Lutterworth in Leicestershire, was apparently taunted about her weight and appearance by anonymous users on the social networking site ask.fm.

Her father, Dave Smith, has called for stricter controls on all internet sites used by children.

Sian Lloyd reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.