Jakarta – Members of two NGOs were involved in a clash on Wednesday, after negotiations failed in a demonstration over waste management rights for factories in Cikarang.

Police arrested three people who allegedly started the fight and confiscated ten machetes from those involved.

Bekasi Police chief Sr. Comr. Wahyu Hadiningrat said the fight started in a demonstration organized by an NGO called the Poor People's Movement. During the rally, the demonstrators demanded a cut from the factories' waste management contracts.

However, another group from a coalition of mass organizations and other NGOs confronted the demonstrators and insisted that the rights to these contracts were already being jointly managed by the factories and local residents and would not be surrendered.

"Tensions grew uncontrollable and after several minutes of heated debate the opposing sides started to fight each other," Wahyu said Wednesday as quoted by tempointeraktif.com.