"It was terrifying during the night. We couldn't even move about in the house," said another woman, a Ras al-Nabae resident who fled the area at first light with her children. "We spent the night in the corridor."
Hezbollah seized the offices of pro-government factions, including Hariri's Future group in the predominantly Muslim western half of the city.
Backed by gunmen from the Shi'ite Amal group, Hezbollah handed over the offices to the army. Hariri supporters gave up their offices to the army elsewhere in the country.
Hezbollah also moved into Hariri-owned media outlets, and Hariri's television and radio stations went off the air. Opposition gunmen of the Syrian Socialist National Party set ablaze a building housing studios of Hariri's TV station.
"It certainly leaves the government weaker and the Future movement weaker," said Paul Salem, director of the Carnegie Middle East Center in Beirut.
But Hezbollah does not want to be seen as an "occupier of Beirut," he said, and handing control to the army appeared its most likely exit.
The European Union, Germany and France urged a peaceful resolution. Syria said the issue was an internal Lebanese affair while Iran blamed the United States and Israel for the violence.
Hezbollah was the only Lebanese faction allowed to keep its weapons after the civil war to fight Israeli forces occupying the south. Israel withdrew in 2000 and the fate of Hezbollah's weapons is at the heart of the political crisis.