People with mental health problems have been cited as a potential danger to public security after some recent crimes were allegedly committed by some who were suspected to be suffering from mental illnesses.

"We should get comprehensive information about people with high potential danger and keep a close eye on them to maintain social stability," Yang Huanning, vice-minister of Public Security, said recently, according to a transcript posted on Xinhua.net yesterday.

The remarks by Yang signal stricter supervision of people with severe mental illnesses, experts said.