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.
Rubio says Iran deal could take days as US launches fresh strikes
Four people killed in train collision with Belgian school bus
Philippines ends rescue efforts as hope fades for victims of building collapse
'Not far away': rescue team confident of reaching 7 trapped for days in Laos cave
