BEIRUT- The Syrian Observatory for Human Rights said major conflict zones in Syria were calm after a ceasefire took effect at 7 pm on Monday.
"Calm is prevailing," Observatory Director Rami Abdulrahman told Reuters, giving an early assessment of the impact of the agreement brokered by the United States and Russia.
He said there had however been some shelling by both rebel and government forces in the southwest of the country.
The Observatory gathers its information from a network of sources in Syria.