15 July 2012 Last updated at 05:38 ET
Syria has rejected claims by the UN that it used heavy weapons in an attack on the village of Tremseh on Thursday.
It accused UN and Arab League special envoy Kofi Annan of "rushed" comments, adding that only troop carriers and small arms were used in the operation.
Syria said what occurred were armed clashes, not a massacre, with only 37 recorded deaths - far short of the 200 or so deaths activists have suggested.
UN observers have returned to Tremseh to continue investigations.
