Some of the family members who went to identify the bodies of their sons said they were forced to sign a document stating that their sons were killed by armed gangs.
Amnesty International knows that a number of people arrested during the security operation in Tell Kalakh still remain in detention, including a 17-year-old boy.
The organization called on the Syrian authorities to release all those arbitrarily arrested and those detained for taking part in peaceful demonstrations or expressing views of dissent, including children.
Amnesty International reiterated its call on the UN Security Council to refer the situation in Syria to the Prosecutor of the International Criminal Court. It also urged the Syrian authorities to provide unimpeded access to UN investigators currently looking into the human rights situation in Syria.
"The willingness of the international community to take action on Libya in the name of human rights has highlighted its double standards on Syria," said Philip Luther.
"Despite President Bashar al-Assad's talk of reform, there is little evidence so far that the Syrian authorities will respond to anything but concrete international measures."
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