Schoolgirl, 15, collapsed and died of a heart attack 'after taking ecstasy in park

A 15-year-old girl has died after allegedly taking a super-strength ‘pink ecstasy’ tablet.

Martha Fernback suffered a fatal cardiac arrest in a park after taking one of the tablets – which were said to be available nearby for just £3.

The schoolgirl is feared to be the 11th victim of the pills, known as Dr Death or PMA, so far this year.

Last night, as a 17-year-old boy was arrested on suspicion of supplying the drug, Martha’s grieving family said the loss of their ‘extraordinary, effervescent . . . beautiful girl’ had left them ‘utterly devastated’.

Parents were urged to warn children about the dangers of super-strength ecstasy tablets, with a family friend saying the pills were ‘everywhere’ in Martha’s home town of Oxford.

The friend of the girl’s mother urged parents on Facebook to ‘speak to your kids about drugs again’, saying: ‘This beautiful 15-year-old died yesterday after taking one PMA pill.

‘Martha never thought she was going to have a cardiac arrest and die. She never thought she would never see her mother again, hold her in her arms and kiss her . . . you get the picture.

‘My friend Anne-Marie Cockburn is broken and in total agony. She wants you to know about this drug that your kids can buy for £3 right in Oxford (it’s everywhere). Spare a few minutes and talk to your children, PLEASE.’

Mrs Cockburn, a freelance marketing consultant, paid tribute to Martha’s friends for their support.

She wrote on a Facebook tribute site: ‘Thanks so much to all Martha’s friends, I am finding so much comfort in reading your lovely messages about my girl. We all loved her so so much.’

Martha is believed to have been a GCSE pupil at The Cherwell School.

She had written online of ‘growing up in an inspirational city’ and her Facebook page shows she was an only child who loved rock band Arctic Monkeys.