POLICE in Hong Kong have raided a homemade-explosives manufacturing lab ahead of another weekend of protests in the semi-autonomous Chinese territory.

Hong Kong media reported that police also found banners against the extradition bill that has sparked more than a month of demonstrations.

But police said they had not established a link to a major protest march planned for today.

Police said they found about two kilograms of TATP, a homemade explosive they described as very unstable and extremely powerful. They added that it is the biggest seizure of the explosive TATP they had ever made. Other weapons and protest leaflets were also found.

Public broadcaster RTHK said a 27-year-old man was arrested. Police said more arrests may follow.

Police have erected huge barricades near government headquarters in preparation for today’s march.

A counter-rally in support of the police was held yesterday evening.