Eleven members of Syria's security forces and two deserters were killed in clashes on Thursday in the flashpoint province of Homs, where at least four civilians also died, activists said.
"Eleven soldiers and members of the security forces were killed in skirmishes" with deserters in the town of Huleh, the Syrian Observatory for Human Rights said.
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The rights group said security forces shot dead three civilians in the Bayyada area of the city of Homs in central Syria and a fourth in its Karm el-Zeitoun district.
The city of Rastan, also in Homs, was blasted with heavy machinegun fire after clashes between soldiers and deserters, two of whom were killed and 13 wounded, according to the Britain-based rights group.
On Tuesday, six children and five mutinous soldiers were among 34 people killed across Syria, the Syrian Observatory said.