Children are being targeted by drug dealers who design ecstasy to look like sweets, the mother of a 16-year-old who died after taking the drug has warned, as three 12-year-old girls remain in hospital.Fiona Spargo-Mabbs, whose son Daniel died after taking MDMA at an illegal rave in London in 2014, said that children need more awareness on drugs.On Saturday evening, three girls were rushed to hospital in a serious condition after taking "Teddy Tablets" in Salford, Greater Manchester.Spargo-Mabbs, from Croydon, said the tablets are shaped like Lego bricks and given names such as "Rockstar" to appeal to children.Her son Daniel died of multiple organ failure three days after taking MDMA, or ecstasy, when he went to a rave in Hayes, London.He was among five friends who had clubbed together £80 to buy the class A drug before the party.She said: "It's just so awful, they are just so young. I know what it's like being in the hospital, the awfulness of not knowing. I'm so relieved that hopefully they are going to be OK."Following Daniel's death, Spargo-Mabbs and her husband, Tim, set up the Daniel Spargo-Mabbs Foundation to make schoolchildren aware of the dangers of drug abuse.One of the girls was due to be discharged from hospital on Monday, while the other two remain in a stable condition.Greater Manchester Police confirmed that a 22-year-old man and 21-year-old woman who were arrested on suspicion of being in possession of a controlled substance are out on bail until July 15. ..