According to the latest reports, about 30 people suffered from cramps as they were apparently poisoned by a substance similar to LSD.

Emergency workers were called to the scene in the small town of Handeloh, south of Hamburg. The local authorities said that about 15 ambulances and a helicopter were dispatched to the site to assist the affected people and take them to the hospital.

Fire service spokesman Matthias Koehlbrandt of the area said that the group attending the conference were aged between 25 and 55 years. The participants were all believed to be alternative and homeopathic practitioners. Initial reports showed that the group was poisoned with amphetamines but Koehlbrandt pointed out that the group did not take the substances knowingly.

Local report said that the group of men and women were found walking around and rolling in the meadow talking without much sense and were suffering from cramps. The affected were suffering from delusions, breathing problems, racing hearts and cramps. The medical tests showed that they had taken hallucinogenic drug 2C-E, which was declared to be illegal in Germany in the previous year.Police are investigating whether the drug was taken as a group experiment.