Lebanese President Michel Aoun said a two-week state of emergency should be declared in the capital after a massive explosion left at least 100 people dead and more than 4,000 wounded.
Tuesday's blast at port warehouses storing highly explosive material was the most powerful in years in Beirut, already reeling from an economic crisis and a surge in coronavirus infections.
Aoun said that 2,750 tonnes of ammonium nitrate, used in fertilisers and bombs, had been stored for six years at the port without safety measures, and described it as "unacceptable".
He called for an emergency cabinet meeting on Wednesday.
Meanwhile, rescue workers dug through the rubble looking for survivors.
"What we are witnessing is a huge catastrophe," the head of Lebanon's Red Cross George Kettani told broadcaster Mayadeen. "There are victims and casualties everywhere."
Officials did not say what caused the blaze that set off the blast.
Prime Minister Hassan Diab promised there would be accountability for the deadly blast at the "dangerous warehouse", adding "those responsible will pay the price."
SpaceX's next-generation Starship rocket reached orbit for the first time on Monday despite having one of its engines shut down unexpectedly, overcoming a hitch mid-flight to deploy its first batch of new Starlink satellites in a truncated mission ending hours earlier than originally planned.
British police said on Monday they were investigating whether individuals acting for a foreign state were involved in an apparent plot to attack an airbase used by the United States but said five suspects they had arrested would be released on bail.
Thousands sheltered on Monday in evacuation centres in the Thai capital, parts of it still flooded after havoc brought by intense weekend rain, while swelling reservoirs in an eastern province triggered orders for more to leave their homes.
Heavy rain and storms have triggered floods and landslides that killed 56 people in India, while in Nepal, 14 have died and another 11 are missing, with authorities warning on Sunday that more flash floods are possible.
The death toll from an Indonesian ship that capsized earlier this month rose to 66 as of Monday, as divers braved leaking fuel and dangerously unsound structures to find the 69 passengers still missing on the 16th day of the search.