(Portland, OR)  --  A Multnomah County grand jury says the deadly shooting of a teenager by a Portland police officer was justified.  Seventeen-year-old Quanice Derrick Hayes was shot and killed by Officer Andrew Hearst the morning of February 9th, following a report of an armed robbery near the Portland Value Inn on Northeast 82nd Avenue.  Authorities say Hearst shot Hayes during a confrontation during which Hayes made "repeated and deliberate motions with his hands to the area of his waistband and pockets."  Fox-12 reports the Portland Police Bureau will conduct an internal review of the entire incident and the case will go before the Police Review Board.