MBABANE — Swaziland police detained the leaders of banned political parties and several activists on Wednesday at the trial of journalists charged with publishing articles critical of King Mswati III’s government, an AFP correspondent and opposition party spokesman said.

Officers detained Mario Masuku, president of the People’s United Democratic Movement (Pudemo), as he was leaving the courtroom, an AFP correspondent said.

"A group of our comrades are currently detained in police custody. No charge has been laid as yet," Pudemo spokesman Themba Mabuza said.

Meanwhile, Swaziland Youth Congress (Swayoco) deputy leader Mlungisi Makhanya and 15 others were detained after protesting outside the court.

The activists clashed with police when officers detained Mr Makhanya. The group were blocking police vans from entering the court grounds in protest at the trial of columnist Thulani Maseko and Bheki Makhubu, editor of The Nation magazine.

The pair have been charged with contempt of court over articles critical of apparent government and court abuses.

Mr Makhubu penned a column criticising head judge Michael Ramodibedi, while Mr Maseko questioned a government vehicle inspector's detention without trial.

The journalists were arrested in March, released and then rearrested this month.

Police have blocked activists from attending the trial and planted plain-clothes officers in the public gallery.

The High Court dismissed an application to allow the activists to attend the trial, according to the pair’s lawyer Ncamiso Manana.

Media in Swaziland operate under strict regulations, and criticism of King Mswati and his government is illegal.

The trial will resume on Monday.

Sapa-AFP