Thirty-seven people have been killed in the four days of fighting that erupted after the government said it would take action against Hezbollah's communications network and sacked the head of security at Beirut airport, who is close to the group.
Hezbollah said any action against its communications network, which played a crucial role in the group's 34-day war with Israel in 2006, was tantamount to declaring war.
The violence that followed was the worst internal fighting since Lebanon's 1975-90 civil war.
The army statement said Brigadier-General Wafiq Shqeir, the head of security at the airport, would remain in his post "pending an investigation".
"As for the telecommunications network, the army will look into the issue in a manner that is not harmful to the public interest or the security of the resistance", it said, referring to Hezbollah.
The military's action followed a televised address by Fouad Siniora, the Lebanese prime minister, in which he accused Hezbollah of staging a coup, calling the Shia group's takeover a "poisonous sting" to democracy.
In his speech, Siniora's first public reaction to Hezbollah's takeover of west Beirut, he said Hezbollah's weapons could no longer be considered legitimate as they had been turned on the Lebanese citizens.
"Hezbollah must realise that force of arms will not scare us or make us retreat," he said.
But analysts questioned what the government would be able to do about disarming Hezbollah.
Commenting on Siniora's speech, Hisham Jaber, a former Lebanese army general, told Al Jazeera: "For Hezbollah to give the government its weapons is a joke - the opposition does not trust this government."
Jaber said: "The army would risk being divided and they are not prepared to defend any government. The army is not supposed to protect the government."
In Beirut, 16 people were killed, two of them at a funeral procession for an earlier victim of the fighting, and there were reports that violence had spilled out of the capital and into other parts of the country.
Hezbollah said it blamed Walid Jumblatt, the pro-government Druze leader, for the death of at least two of its members in Aley, east of Beirut.
Jumblatt admitted there had been "an unfortunate incident" in the predominantly Druze and Christian town, in which "three people" had been killed.
"Two bodies were found and turned over to the army," he said.
He did not admit his supporters were responsible, but said if unconfirmed reports that the victims had been tortured proved to be true, he would "personally take responsibility for it".
Relative calm had settled over most of west Beirut on Saturday, as people ventured out in the affected areas and cleaning crews swept away the debris.
The army was out in force manning roadblocks and far fewer armed men were on the streets, though the main road to the airport remained blocked for a fourth day and there were no incoming or outgoing flights.
Rula Amin, Al Jazeera's correspondent in Beirut, said the standoff between the US-backed government and the opposition was over for the time being.
"Hezbollah has already started pulling its supporters off the streets and by Monday the government should have revoked its decisions," she reported.
|Siniora said Hezbollah's weapons could no|
longer be considered legitimate [AFP]
But she said even though the government had tried to save face by deferring to the army, it had in reality still bowed to Hezbollah's demands.
"The truth is Hezbollah won and it got what it wanted - the government had been adamant that it won't revoke its decisions but now they will," she said.
"It's embarrassing to the government and to the March 14 coalition not only because they had to back off on these decisions, but also because they lost to Hezbollah so quickly."
Washington pointed the finger at Iran and Syria - both of which back Hezbollah - for the violence, saying they must be held to account.
"The United States is consulting with other governments in the region and with the UN Security Council about measures that must be taken to hold those responsible for the violence in Beirut accountable," the White House said.
Arab foreign ministers were due to hold an emergency meeting on Sunday to discuss the crisis.