A mother whose 14-year-old daughter killed herself after being subjected to bullying says internet trolls are now targeting her.

Schoolgirl Izzy Dix hanged herself in her bedroom after suffering months of vile taunts, insults and cruel remarks.

Her mother Gabbi, from Brixham, Devon, launched a national campaign in the wake of her daughter's death to stamp out cyber bullying - but has now become the victim of internet trolls herself.

The horrified mother called police after discovering a Facebook page which appeared to glorify her daughter's tragic death. Vile comments left on the site urged other youngsters to 'do an Izzy Dix' and 'go get cancer'.

Trolls also created a fake profile for Gabbi, complete with a stolen Facebook photograph, and posted hateful comments in her name.

Gabbi believes the troll may even be one of the bullies who targeted her daughter.

She said: 'I cannot believe it is still happening and that someone is using my daughter's death to target me and other teenagers. It violates her memory. It is incomprehensible.

'It is completely vile and I feel quite sick about it. I have lost my daughter. I do not deserve it.

'This troll cyber bully has been active in Torbay since April, 2013, and although I keep an open mind, I have believed since day one there is a link amongst all this to my daughter's suicide.'

Gabbi found tormented Izzy dead at their home in Brixham on September 17 last year.

An inquest heard bullies mocked her at school for being academically ambitious and for refusing to wear short skirts.

There was never concrete evidence that cyber bullies pushed her over the edge, but Gabbi remains convinced her daughter was abused via the web.

A petition against cyber bullying, lodged by Gabbi, has attracted more than 100,000 signatures and David Cameron is among her supporters.

But friends say the petition has also put her directly in the firing line for trolls.

Gabbi has refused to look at the fake profile and Facebook page herself but has demanded police investigate after friends at the Izzy Dix Memorial Group brought it to her attention.

By trawling the social networking site, they managed to establish the same author had been abusing and harassing children for nearly a year.

Their evidence has now been handed over to the police.

Devon and Cornwall Police confirmed an investigation was underway and said the posts are a breach of the Malicious Communications Act.

A spokesman said: 'The Force Internet Crime Investigation Team is investigating allegations of trolling.

'Due to the nature of this type of crime, the enquiry could prove to be a protracted one.

'To date no arrests have been made and the family are being kept up-to-date regarding any developments by officers from the team.'

A spokeswoman for the Izzy Dix Memorial Group said it had no plans to end the drive against cyber bullying.

She said: 'Gabbi has been through more than enough already. You really have to ask yourself what sort of warped mind would derive enjoyment from causing her more pain.

'This is exactly the sort of behaviour the campaign was launched to stop so we will carry on until it's stamped out.

'It only takes one fragile young mind to read this nastiness and we could have another tragedy on our hands.'