A MAN ARMED WITH A SHARP OBJECT IN CUSTODY AFTER PORTLAND POLICE SAY HE WAS RESPONSIBLE FOR SEVERAL CAR- JACKINGS. NEWS 8'S JIM KEITHLEY IS LIVE ON CONGRESS STREET WHERE IT ALL WENT DOWN. AND JIM -- HOW DID THIS PLAY OUT? THE CAR-JACKING HAPPENED IN THE 1400 BLOCK OF OUTER CONGRESS STREET - JUST ACROSS FROM THE WESTGATE SHAW'S.... PORTLAND POLICE SAID 41 YEAR OLD RICHARD MCDOWELL - DESCRIBED AS A TRANSIENT - CAPTURED HERE ON SURVEILLANCE CAMERAS... POLICE SAID HE APPROACHED THREE DIFFERENT DRIVERS...ABOUT THIS STRETCH OF CONGRESS STREET ABOUT 10:15. POLICE SAID MCDOWELL APPROACHED THE FIRST VICTIM - ARMED WITH A SHARP OBJECT - THAT PERSON REFUSED. POLICEE SAY MCDOWELL KEPT WALKING AND ATTACKED THE DRIVER OF A PORSCHE, CAUSING SERIOUS INJURY - BAD ENOUGH WHERE THE DRIVER HAD TO GO THE HOSPITAL. POLICE SAID MCDOWELL KEPT WALKING AND PULLED A THIRD VICTIM FROM A HONDA CIVIC AND JUMPED IN AND TOOK OFF.....A WITNESS TRIED TO STOP HIM... POLICE EVENTUALLY CAUGHT UP WITH MCDOWELL AFTER HE ABANDONED THE VEHICLE IN KENNEBUNK ON "ALEWIVE ROAD." THE VICTIM IN THE PORSCHE WHO WAS SERIOUSLY INJURED DURING THE ROBBERY WAS TRANSPORTED TO MAINE MEDICAL CENTER WHERE THEY WERE BEING TREATED FOR INJURIES THAT ARE NOT CONSIDERED TO BE LIFE THREATENING. MCDOWELL WAS TAKEN TO THE CUMBERLAND COUNTY JAIL ON CHARGES INCLUDING MULTIPLE COUNTS OF ROBBERY AND ELEVATED