Principals of primary schools in Yuen Long and Tin Shui Wai will discuss the controversial Church of Zion in an urgent meeting today after learning students had reportedly joined the sect and been urged to drink hydrogen peroxide. Sect followers are believed to have approached teenagers in Tin Shui Wai recently and invited them to join the church, which believes hydrogen peroxide can cure a range of illnesses when consumed. The chairman of the Yuen Long Primary School Heads Association, Keung Wai-wing, said the group's executive committee would meet to discuss the church's activities in the district and explore ways to protect students. Last month, principals of two Tin Shui Wai secondary schools revealed in a meeting with police that they suspected more than 10 students from their schools had joined the church. A Yuen Long police officer said no formal investigation had been launched as the two schools did not provide more information or allow officers to talk with the students. The officer said there had been no reports of students falling ill after drinking hydrogen peroxide. A police spokeswoman said the church was being monitored and a formal investigation would be launched if a complaint was received or illegal activities were uncovered. Yesterday, a spokesman for the Education and Manpower Bureau said staff had liaised with schools and non-government organisations in Yuen Long asking them to promote positive life values to students and to educate teachers, parents and students on the harmful effects of drinking hydrogen peroxide.