Cameron Writes To Victim's Dad David Cameron has written a letter to the father of a teenage girl who killed herself after she was bulled on the controversial website Ask.fm. Mr Cameron sent the personal letter to David Smith after his 14-year-old daughter Hannah was found dead two weeks ago at her home in Lutterworth. The Prime Minister insisted legislation exists to deal with online trolls, the Daily Mirror reported. Mr Cameron said he was grateful "as a parent" to David Smith for highlighting the problem of bullying on social sites. Mr Cameron wrote a personal letter to Hannah's father Mr Smith, 45, a trucker from Lutterworth had accused the Conservative Party leader of "doing nothing" to stop youngsters falling victim to trolls. The newspaper reported that Mr Cameron wrote: "I want to reassure you that the Government takes this issue very seriously. There is already legislation in this area. Bullies mistakenly believe that because the abuse they inflict is happening online, it is beyond the reach of the law. I am very clear that it is not and the police should investigate it as they would any other crime. Hannah received bullying messages on the website Ask.fm It was reported that the Government is giving teachers powers to search for and delete images and files on children's mobile phones. Mr Cameron also reportedly told Mr Smith that MPs were "working with industry" so parents can "install internet filters for devices in the home." Mr Smith said: "We need the law to change so sites can't operate if they don't have correct measures in place." Bosses at Ask.fm - set up for users to ask each other questions - have pledged previously to help Leicestershire Police over Hannah's death.