Police in Eswatini have fired rubber bullets at scores of protesters who took to the streets of the capital, Mbabane, angered by the arrests of two MPs who had recently called for political reforms, a pro-democracy activist has told the BBC.
At least one person was said to have been seriously injured.
Pro-democracy legislators Bacede Mabuza and Mthandeni Dube were arrested on Sunday and are accused of inciting violent protests.
They had asked for bail but a court, which was expected to rule on the application, had delayed its judgement, their lawyers said.
Mr Mabuza and Mr Dube had recently called for an elected rather than appointed prime minister among other changes.
When the authorities banned citizens delivering petitions to support this demand last month, violent protests broke out and at least 50 people were killed.
Fifty-three-year-old King Mswati III, who came to the throne 35 years ago, rules by decree.
His critics accuse him, and his 15 wives, of leading a lavish lifestyle and treating opponents harshly.
He has resisted pressure to introduce a multi-party system and appointed a new prime minister shortly after the protests.