Activists are reporting that an airstrike on a prison run by Al-Qaida's affiliate in Syria has killed at least 39.
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The Britain-based Syrian Observatory for Human Rights said 39 people were killed, including many fighters from the Nusra Front as well as detainees in the northwestern town of Maaret al-Numan.
The Local Coordination Committees, another activist group, said the airstrike killed 51.
Conflicting figures are common in the aftermath of airstrikes in Syria.
The Observatory said the warplanes fired four missiles that hit the Islamic court that includes a jail as well as a nearby road linking the court with a market.