(Portland, OR)  --  A 20-year-old man is facing a murder charge in connection to a deadly stabbing in Happy Valley.  Police arrested Robert Matthew Fountain on Monday night for the stabbing of 40-year-old Michael Lee Black at the Hawks Ridge Apartments near City Hall.  Police say Fountain was treated for minor injuries at a hospital before being booked into the Clackamas County Jail on one count of murder.  An investigation is ongoing.