Demonstrators clashed with security forces in the Lebanese capital, Beirut on Thursday.
Forces deployed tear gas on dozens of protesters near the parliament.
The Lebanese people are angry over the current government over negligence that led to Tuesday’s huge explosion.
2,750 tonnes of ammonium nitrate stored unsafely in a warehouse exploded killing at least 145 people and injured about 5,000 others.
The explosion left a trail of destruction in all districts of the capital, with homes and businesses reduced to rubble.
The government on Wednesday placed multiple port officials under house arrest pending an investigation into the explosion.
The country’s Supreme Defence Council insisted that those found responsible would face the “maximum punishment”.
French President Emmanuel Macron visited the country on Thursday and walked round the city. He told crowds he would not let aid go to “corrupt hands”, and promised to call for a “new political pact” from the country’s leaders.