The United Nations General Assembly votes Friday on a Saudi-drafted resolution on Syria, as activists report more violence .
The Britain-based Syrian Observatory for Human Rights said Friday that shelling of a Palestinian refugee camp in the capital, Damascus, Thursday killed at least 21 people. The Observatory did not say who fired the mortars.
The group also reported clashes and government attacks Friday in other areas of the country, including the provinces of Hama, Idlib and Aleppo.
The non-binding U.N. resolution would condemn both the Assad government's use of heavy weapons and the U.N. Security Council's failure to agree on measures to stop the violence.