(Reuters) - The
local commander of a Syrian rebel group affiliated to al Qaeda was freed
on Sunday after being held by Kurdish forces in a power struggle
between rival organizations fighting President Bashar al-Assad,
activists said.
However, the pro-opposition
activists gave conflicting reports of how the Islamist brigade commander
in the Syrian town of Tel Abyad near the Turkish border had come to be
free.
The British-based Syrian
Observatory for Human Rights said Islamist rebels had exchanged 300
Kurdish residents they had kidnapped for the local head of their group,
the Islamic State of Iraq and Sham (ISIS). Other activist groups
challenged this account, saying Islamist fighters had freed Abu Musaab
by force, with no Kurdish hostages released.
Sporadic fighting over the past five days in towns near the frontier with
Turkey
has pitted Islamists trying to cement their control of rebel zones
against Kurds trying to assert their autonomy in mostly Kurdish areas.
The
trouble highlights how the two-year insurgency against 43 years of
Assad family rule is spinning off into strife within his opponents'
ranks, running the risk of creating regionalized conflicts that could
also destabilize neighboring countries.
The factional fighting could also help Assad's forces, who have launched an offensive to retake territory.
BELT OF TERRITORY
Assad
has been trying to secure a belt of territory from Damascus through
Homs and up to his heartland on the Mediterranean coast and, with the
help of the Lebanese guerrilla group Hezbollah, has won a string of
victories in Homs province and near the capital.
On Sunday his forces ambushed and killed 49 rebels in the Damascus suburb of Adra, the Observatory said.
The
town was once a critical point along the route used by rebels to bring
weapons to the capital, but Assad's forces recaptured it a few months
ago and have been working to cut off rebel territories in the area.
To
the north, activists reported Turkish troops reinforcing their side of
the frontier near Tel Abyad, but the army could not be reached for
comment. Turkish forces exchanged fire with Syrian Kurdish fighters in
another border region earlier in the week.
The
Observatory said the alleged prisoner exchange was part of a ceasefire
agreed after a day of fierce clashes in Tel Abyad, but other activists
said there was no deal and reported that many Kurdish residents were
being held by ISIS fighters.
The
Observatory said the fighting in Tel Abyad started when the local ISIS
brigade asked Kurdish Front forces, which have fought with the rebels
against Assad, to pledge allegiance to Abu Musaab, which they refused to
do.
Other activists said the
clashes were an extension of fighting that broke out last week in other
parts of the northern border zone.
Opposition
activists also reported the killing of at least 13 members of a family
in the Sunni Muslim village of Baida on Sunday, in what they described
as a second sectarian massacre there.
FIGHTING NEAR THE COAST
The
killings followed a rare eruption of fighting between Assad's forces
and rebels in the coastal province of Tartous, an enclave of Assad's
Alawite minority sect that has remained largely unscathed by the civil
war.
Syria's marginalized Sunni
majority has largely backed the insurrection while minorities such as
the Alawite sect, an offshoot of Shi'ite Islam, have largely supported
Assad, himself an Alawite.
The Observatory said four women and six children were among those killed in Baida.
"A
relative came to look for them today and found the men shot outside.
The women's and children's bodies were inside a room of the house and
residents in the area said some of the bodies were burned," said Rami
Abdelrahman, head of the Observatory.
In
May, pro-Assad militias killed more than 50 residents of Baida and over
60 in the nearby town of Banias. In those killings, some bodies, many
of them children, were found burned and mutilated.
The
anti-Assad revolt has evolved from its origins as a peaceful protest
movement in March 2011 into a civil war that has killed over 100,000
people and turned markedly sectarian.
The
ethnic Kurdish minority has been alternately battling both Assad's
forces and the Islamist-dominated rebels. Kurds argue they support the
revolt but rebels accuse them of making deals with the government in
order to ensure their security and autonomy during the conflict.
The Kurdish people, scattered over the territories of
Iran, Turkey, Iraq and Syria, are often described as the world's largest ethnic community without a state of their own.
(Additional reporting by Isabel Coles in Arbil and Jonathan Burch in Ankara; Editing by Kevin Liffey)