"The Syrian Observatory for Human Rights has documented death of nearly 300000 persons since 18/03/2011, which witnessed the fall of the first martyr in Daraa, until 12/01/2014," the organization said on its website Tuesday, adding that the real number is likely to be about 80,000 more than the documented figures "due to the extreme discretion by all sides on the human losses caused by the conflict and due to the difficulty of communication in Syria."
The numbers do not include thousands of people who disappeared during the armed conflicts and those captured by Islamists.
The organization also said that another 1.5 million people had been wounded, many with permanent disabilities, and that more than half of Syria's 18-million population had been forced to flee their homes.
Unrest in Syria, which later turned into a civil war, erupted in 2011, with government forces fighting rebels and jihadists, some of which have links to al-Qaeda. Since 2012, the country has been suffering from the advances of Islamic State, also known as the Islamic State of Iraq and Greater Syria (ISIS) or the Islamic State of Iraq and the Levant (ISIL).