(Beaverton, OR)  --  Police say a man and his two children are dead, following what appears to have been a murder-suicide at a Beaverton apartment.  The three were found yesterday afternoon, lying on the floor of an apartment at the Redwood Creek complex on Southwest Hall Boulevard.  Police say after they stepped outside the apartment, they heard a gunshot and believe the man killed himself.  The man was 36-years-old and the children were six and eight-years-old.