Syrian damage to car buildings 370.
BEIRUT - Syrian troops pounded opposition areas, activists said, killing 74 civilians in an offensive that has sent thousands of refugees surging into Turkey before next week's UN-backed ceasefire aimed at staunching a year of bloodshed.
At least 15 rebels and 17 security force members were also killed, raising the death toll in violence to over 100.
Each side has accused the other of intensifying assaults in the run-up to the truce due to take effect early on Thursday if government forces begin pulling back from towns 48 hours earlier in line with UN-Arab League envoy Kofi Annan's peace plan.
The military shelled Deir Baalba district in Homs, killing four people, the grassroots Local Coordination Committees opposition group said. Thirteen men were also found killed in cold blood in the same area, it said.
Amateur activist video showed scenes of carnage said to be the aftermath of the shelling. Mangled limbs and body parts in blankets were being loaded on a pick-up truck. A second video showed 13 men who appeared to have been tied up and executed.
No comment was immediately available from Syrian officials. The videos could not be independently verified. The government has placed tight restrictions on media access in Syria.
The Syrian Observatory for Human Rights said at least 74 civilians had been killed, including 40 in an army attack on al-Latmana, in Hama province, that began on Friday. The rebel Free Syrian Army lost 15 men in the battle, it said, and 17 members of the security forces were killed across the country.
In an activist video from al-Latmana, mourners held aloft the limp corpse of a child. A row of bodies lay on the ground.
The Observatory report said 12 were killed by shelling as the army swept through villages in Idlib province.
A rocket hit a bus traveling from Lebanon to Syria at Jousa just inside Syria, a Lebanese security source said. Witnesses said six Syrians were killed. Lebanese medics confirmed two dead and nine wounded. It was not clear who had fired the rocket.
Rebels trying to oust Syrian President Bashar Assad attacked army posts north of Aleppo before dawn, killing an officer and two men, and assaulted a helicopter base, activists said.
Syrian commandos shot dead three rebels in an overnight raid on a "terrorist den", Syria's state news SANA agency reported.
Country towns north of Aleppo have endured days of clashes and bombardment, prompting 3,000 civilians to flee over the Turkish border on Friday alone - about 10 times the daily number before Assad accepted Annan's plan 10 days ago.Violence puts planned truce in jeopardy
The bloodletting of the past week or so does not bode well for implementation of Annan's ceasefire plan.
This requires Assad to "begin pullback of military concentrations in and around population centers" by Tuesday.
Rebel Free Syrian Army commander Colonel Riad al-Asaad said his men would cease fire, provided "the regime ... withdraws from the cities and returns to its original barracks".
Syria has said the plan does not apply to armed police, who have played a significant role in battling the uprising in which security forces have killed more than 9,000 people, according to UN estimate. Syria says its opponents have killed more than 2,500 troops and police since the unrest began in March 2011.
Annan's plan does not stipulate a complete army withdrawal to barracks or mention police.Satellite pictures
published by US ambassador Robert Ford showed Syrian artillery and tanks still close to communities.
"This is not the reduction in offensive Syrian government security operations that all agree must be the first step for the Annan initiative to succeed," Ford said in Washington.
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