Protesters blocked several main roads in the Lebanese capital, some setting tires and rubbish bins on fire, as several hundred people gathered in the heart of the city on Sunday to protest corruption and deteriorating economic conditions.

Demonstrators carrying signs and flags marched along a main road, chanting "Down with capitalism" and "Leave!" amid heightened security in the area, while others stood outside parliament.

Protesters gathered in at least three other areas in Lebanon, including a main highway that leads to Damascus, the state news agency said.