What happened in Yarmuk

"Syria opposition activists have told media that 21 people were killed when shells hit the Yarmouk Palestinian refugee camp in the suburbs of Damascus on 2 August.  The area is inhabited by a mixed population of Syrians, Palestinian refugees and others.  Today, Chris Gunness, spokesman for UNRWA, the UN agency for Palestine refugees, confirmed in a statement that, “Intensive armed engagements in Tadhamoun, Yalda, Hajar Al Aswad, Al Kaddam and other districts that share borders with Yarmouk have resulted in deaths and injuries of residents of Yarmouk, including Palestine refugees.”" (thanks Electronic Ali)