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.

Rescuers pull four from flooded cave in Laos
Zambia steps up Ebola screening as neighbouring Congo sees cases rise
Pentagon chief says US ready to restart strikes on Iran if no deal
Flights briefly halted at Munich Airport over possible drone sighting
