Schoolgirl killed by carbon monoxide named Hannah Thomas-Jones was on a family camping holiday when she is believed to have been poisoned by fumes from a disposable barbecue that was brought under the canvas at night. A Facebook page set up in her honour had attracted more than 250 well wishers last night as friends posted a stream of grief-stricken messages online. Shelby Lloyd wrote: "You are 1 in a million we wish we could change turn back time, you always cheered us up when we were sad you always made people laugh and never got upset easily even if you were you always carried on as normal Hannah everyone loves you! Another friend Katrina Louise O'Brien said: "Hannah I will miss u so much. Can't think how it is going to be different in school with out u xxxx The teenager, who attended Wilmslow High School, a specialist sports college in Cheshire, was discovered unconscious, along with her parents and brother, by a relative staying in a neighbouring tent on the Shropshire campsite on Sunday morning. A doctor tried to resuscitate her but she was pronounced dead at the scene by paramedics who arrived just minutes later. Her 11-year-old brother and parents were taken to hospital suffering from suspected carbon monoxide poisoning but were last night said to be in a stable condition. West Mercia Police said the death was being treated as unexplained but not suspicious. A spokeswoman said officers from the force were working alongside Shropshire Fire and Rescue Service to investigate the circumstances of the incident.