Mourners have buried dozens of people killed in bombings outside two Sunni mosques in the port city of Tripoli as Lebanon observes a day of mourning under tight security.
Soldiers on foot and in armoured vehicles patrolled the tense northern city on Saturday, which has been riven by strife over Syria's conflict.
Armed men in civilian clothing stood guard outside the headquarters of political parties and at the houses of MPs and religious officials.
Friday's attack which cost more than 40 lives - the deadliest in Lebanon since its 1975-1990 civil war - has drawn strong condemnation from the international community.
Coming a week after a deadly blast that hit the Beirut bastion of Shi'ite movement Hezbollah, the latest bombings risk further stoking tensions between supporters and foes of the Syrian government.
Prime Minister Najib Mikati, a native of Tripoli, called for an end to the bloodshed and urged rival Lebanese politicians to unite and maintain neutrality on the Syria war.
"We must end this political polarisation ... We must return to the policy of dissociating (from the Syria conflict)," he said in his hometown after talks with several city officials.
"Enough of victims and enough of bloodshed," Mikati pleaded.
Outside his Tripoli home, the streets were deserted as funerals were held for several victims including three siblings aged seven, five and four.
Gunmen fired into the air to vent their anger while some mourners called for revenge.
The blasts hit during weekly Muslim prayers, in a city where Sunni supporters of Syria's rebels engage in often deadly clashes with members of the Alawite offshoot of Islam who back Syrian President Bashar al-Assad.
The first bomb struck in the city centre at the Al-Salam mosque as worshippers were still inside.
CCTV footage showed people sitting on the floor when the explosion hit, and scattering in panic.
The second erupted minutes later outside Al-Taqwa mosque, about two kilometres away, near the port.
A security source put the toll at 45 dead, while the Lebanese Red Cross said at least 500 people were wounded, of whom 280 were still in hospital.
No one has claimed responsibility for the bombings which have been blamed by some on Syria and by others on Hezbollah, which has been fighting alongside Assad's troops for weeks.
