Lebanon's opposition on Tuesday buried an anti-government protester who was shot dead in riots between supporters and opponents of the government that has raised sectarian tensions in the country.

Hundreds of Shiite Muslims marched behind the coffin of Ahmed Ali Mahmoud, 20, who was shot dead on Sunday in a Sunni neighborhood while returning from an opposition rally led by Hezbollah.

Waving clinched fists and flags of the Shiite Hezbollah and the Amal movement, angry mourners chanting "death" to Prime Minister Fouad Seniora.

On Monday night, protestors from the two mainstream opposition parties clashed on the streets with pro-government followers of the slain Premier Rafik Hariri and his son Saad Hariri. The violence resulted in the injury of 20 people.

The security authorities on Tuesday urged organizers of the protests to restrain from the activists, while banning them from attacking civilians and properties.

Meanwhile, the army was also on high alert and increased forces in the capital Beirut to maintain security after the killing of Mahmoud.

Lebanese opposition supporters have been staging an open-ended sit-in for four days in Beirut, demanding for the step-down of the Seniora government and form a new national unity one.

Source: Xinhua