Hundreds of anti-government protesters blocked roads in Beirut and in other parts of Lebanon, in a bid to press for political change.
A semblance of normality had gradually returned to the country last week after Saad al-Hariri resigned as prime minister.
While banks reopened for the first time in two weeks, schools continued to remain closed.
Hariri continues in a caretaker capacity until a new government is formed.
The nationwide protests were triggered on October 17 after the government announced its decision to tax WhatsApp messages.
Pakistan protests to Kyrgyz diplomat after violence
Netanyahu is declining in a new Israeli poll, while his rival outperforms him
Fifty dead in heavy rain, floods in central Afghanistan
Australians stranded in New Caledonia amid civil unrest
Munich airport faces delays after climate activists breach runway
