A message purportedly from al Qaeda leader Ayman al Zawahiri addressed militants fighting in Syria to unite.
The message, more than five minutes long, was posted online on militant websites. Its authenticity could not be independently verified by CNN.
In the message, Zawahiri calls upon all jihadi factions to end the infighting.
"Our hearts are bleeding, the heart of our Islamic nation is bleeding when we see the internal strife among the mujahedeen in Syria."
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