Durban - A Zulu cultural expert said King Goodwill Zwelithini was not wrong when he blamed "evil spirits" for the erratic behaviour of a group of the young women at the annual reed dance on the weekend."When we talk about spirits, it is something you cannot see. It is a feeling that takes over you," Dr Nomagugu Ngobese said.She had been transporting young girls to the reed dance since the mid-1980s. and said Friday night was one filled with much "negative energy".Reports emerged over the weekend that a group of women surged towards the stage at Nyokeni Palace in KwaNongoma where President Jacob Zuma was, but police and security kept them at bay.Zwelithini said too many "evil spirits" had invaded the young girls, part of the group who had started arriving at the palace grounds from last week Thursday. They started their journey home on Sunday.Ngobese said the incident was not an isolated one, but was common among young Zulu girls. "I stopped our bus twice to cleanse our girls [on Friday]. When we do this, we perform a small act that utilises water to free the individual of evil forces," she said. Ngobese said she was blessed to hear ancestral spirits informing her of "evils on my path". "En route to the dance, there were accidents and other disruptive types of events. These highways are filled with many bad things that happen. This is why we had to perform these acts," she said.However, Ngobese was quick to emphasise the need for action with prayer. "In our culture, they go hand-in-hand. If we do not come together as a nation and put a stop to the wrongdoings, our people will be left vulnerable and susceptible to these bad spirits," she said. Royal household spokesperson Prince Thulani Zulu said the "devil spirit" was common, especially in schools with young girls. "I think congestion always contributed to the over-hype of the incident. It lasted no more than 20 minutes. I think children will always be children. "This was isolated and has never occurred at the Reed Dance before," he said in reference to the young women's erratic behaviour.This year the province has stepped up security on the roads in an effort to curb accidents.