BEIRUT (AP) -- Gunmen from rival Sunni and Shiite Muslim villages in northern Syria have freed more than 200 people snatched in tit-for-tat kidnappings this month, easing tensions that threatened to touch off sectarian violence, activists said Friday.
In Syria's largest city of Aleppo, three explosions that appeared to be caused by missiles killed at least 14 people, activists said, adding that dozens of people were feared to be trapped under the rubble of damaged buildings.
The wave of abductions in a rural part of the Idlib province has highlighted how much the civil war between the regime of President Bashar Assad and the hundreds of rebel groups seeking his ouster has enflamed tensions between Syria's myriad of religious groups.
The Syrian regime, established more than four decades ago by Assad's father, Hafez, has largely stocked the upper ranks of the country's security agencies and armed forces with members of the ruling family's minority Alawite sect, an offshoot of Shiite Islam. Most of the rebels fighting Assad's forces are poor, rural members of Syria's Sunni majority. Other religious minority communities, like Christians and Druze, have largely remained on the sidelines.
As the conflict approaches its third year, its sectarian nature is worsening. This month, clashes broke out between Sunni and Shiite villages in the area of Qusair, near the Lebanese border. Islamic extremists who have joined the rebels have destroyed Christian liquor stores, and sometimes refer to their dead adversaries with derogatory names insulting their sects.
The Idlib kidnappings showed how quickly sectarian tensions can escalate, but also that local communities are still capable of pulling back from the brink.
Opposition activists say the abductions began Feb. 14 when a bus carrying dozens of Shiite civilians, mostly women and children, disappeared on the road to Damascus. Gunmen from the area's two Shiite villages, Fua and Kifarya, responded by snatching civilians from the Sunni villages nearby.
Some of the Sunnis were nabbed at makeshift checkpoints on rural roads, while others were taken while entering the provincial capital, which government troops still control. Many of the Sunnis captives, too, were woman and children.
"They started taking over buses from the opposition villages that were heading to Idlib city," said activist Hamza Abu al-Hassan from the village of Binnish. "Some of them had government jobs or had to file papers or were just going to visit their families."
The total number of those kidnapped remains unclear. Abu al-Hassan said they included about 35 Shiites and more than 250 Sunnis. Other activists gave higher numbers.
It also remains unclear who hijacked the bus. Local activists said no rebels claimed responsibility, possibly because the kidnappers were criminals seeking ransom or because the move was immediately criticized by opposition groups.
Local rebels threatened to storm the Shiite villages, whose residents they say have been armed by the government. But the crisis was resolved early Thursday when the Shiite captives returned home, followed by the release of the Sunni captives later in the day, activists said.
Residents of the Shiite villages could not be reached for comment, though a Facebook page for the larger of the villages, Fua, said in a post Thursday that the captives had returned.
"With God's help we have liberated our kidnapped sisters from hands of the enemies of God," the post said. It also called for "retribution."
Although the abductees have all been freed, the fundamental divide between the Sunni and Shiite villages remains.
"There will have to be a battle in the future because the army is there," Ismael Khatib, a rebel from the village of Taftanaz, said via Skype. "They have tanks there that shell us, so it is natural that the rebels will liberate the area to stop the shelling."
The explosions Friday in Aleppo, Syria's largest city and commercial capital, hit the eastern neighborhoods of Ard al-Hamra and Tariq al-Bab, the Britain-based Syrian Observatory for Human Rights activist group said.
The Observatory said at least 14 people were killed, dozens wounded and many more were believed trapped under the debris.
The Aleppo Media Center activist group put the death toll at 16.
Videos posted online showed what appeared to be the aftermath of the explosions.
In one video that the caption said was from Ard al-Hamra, dozens of people, many of them with flashlights, scour the rubble in the dark in search of survivors. In another clip, at least nine bodies are laid out on a floor, some of them wrapped in blankets.
The videos appeared authentic and corresponded to other AP reporting.