Amnesty International and Human Rights Watch called on the Arab League to endorse the UN Security Council motion to refer Syria to the International Criminal Court on allegations of crimes against humanity. 

In a report,'We Live as in War', released on Friday, the Human Rights Watch said,

"Human Rights Watch believes that the nature and scale of abuses committed by the Syrian security forces across the country indicate that crimes against humanity may have been committed.

"The similarities in the cases of apparent unlawful killings, including evidence of security forces shooting at protestors without warning in repeated instances, arbitrary detention, disappearances, and torture, indicate the existence of a widespread and systematic attack against the civilian population which has the backing of the state."

“The Arab League needs to tell President Assad that violating their agreement has consequences, and that it now supports Security Council action to end the carnage.”

The report also highlighted the difficulty in obtaining accurate information given the Syrian regime's efforts to prevent the truth from being exposed,

"Obtaining accurate information about events in Syria is challenging as the authorities put enormous efforts into preventing the truth from getting out.

"This report is based on interviews conducted by Human Rights Watch staff with more than 114 residents of Homs as well as a review of 29 interviews videotaped by Syrian activists.

"The government has refused Human Rights Watch access to Syria, so we conducted interviews with residents who had escaped to neighboring countries and over the Internet with witnesses inside Syria.