The attack took place shortly after midnight
Demonstrators waved Iranian, Palestinian and Hezbollah flags and voiced unwavering allegiance to Tehran.
Clean-up operations began in Beirut on Wednesday, hours after the ceasefire between Israel and Hezbollah took effect.
Cross-border attacks between Israeli forces and Hezbollah militants have increased in the context of the Gaza war, which is about to enter a second year.
“We call on our Palestinian people and the people of the Arab and Islamic nations to demonstrate in all cities next Friday,” a Hamas representative said.
